Montgomery International School vs The International School of Brussels

	M Montgomery International School Brussels, Belgium	T The International School of Brussels Brussels, Belgium
Snapshot	Snapshot
Fees / year	Fees / year €27,650 - 35,400	Fees / year €22,590 - 49,715
Age range	Age range 5 - 18 years	Age range 2 - 18 years
Type	Type Co-educational	Type Co-educational
Curriculum	Curriculum IB (PYP), IB (MYP), IB (DP)	Curriculum IB (PYP), IB (MYP), IB (DP), Advanced Placement (AP), American Curriculum, BTEC Qualification
Pupils	Pupils 200	Pupils —
Typical class size	Typical class size 15	Typical class size —
Instruction language	Instruction language English, French	Instruction language English
Opened	Opened 2007	Opened 1951
Bus service	Bus service No	Bus service Yes
Essentials	Essentials
Location	Location Montgomery International School is located in the heart of Brussels, Belgium, at 133 Rue du Duc, 1200 Brussels. It sits near the European institutions and NATO, with convenient access to public transport. The campus supports an international atmosphere suitable for a cosmopolitan student body.	Location Kattenberg 19, B-1170 Brussels, Belgium. It is in Watermael-Boitsfort, the south‑east quadrant of Brussels. The 40‑acre campus sits within the Forêt de Soignes and offers extensive outdoor learning facilities; it is easily reachable by car, bus, train and tram.
Stages	Stages Elementary through secondary (PYP, MYP, and DP) for ages 5–19.	Stages Early Childhood Centre (Preschool – Grade 2); Elementary School (Grade 3–6); Middle School (Grade 7–9); High School (Grade 10–12).
School type	School type Private international IB World School	School type Private not-for-profit international day school.
Pupil nationality mix	Pupil nationality mix —	Pupil nationality mix 60+ nationalities represented.
Additional learning support	Additional learning support —	Additional learning support Inclusion & Challenge services provide personalised support for diverse learning needs across all age groups.
Country affiliation	Country affiliation Belgium	Country affiliation Belgium
Religious affiliation	Religious affiliation —	Religious affiliation —
School day structure	School day structure Primary hours: 8:10 am–3:30 pm, Wednesdays 8:10 am–12:05 pm; Secondary hours: 8:10 am–3:30 pm daily.	School day structure —
Bus service details	Bus service details No MIS-operated bus service. Families may use external providers (Infinities or Kid's Ride); MIS is not responsible for their operations.	Bus service details The ISB Bus Service operates with more than 30 buses serving most parts of the city and surrounding areas. It is available to students from Kindergarten to Grade 12, with BatOnRoute real‑time tracking and bus monitors. Late Bus Service is available for Middle and High School students; bus fees for 2025‑26: Return 3,140 Euro; One way 2,385 Euro.
Fees	Fees
Fee details	Fee details Application & registration fees - One‑time registration fee for new students: EUR 2,000. - Annual administration fee for returning students: EUR 1,650. - Waiting‑list payment: EUR 2,000 (this amount may be taken to secure a place on the waiting list and is refundable if the family chooses not to enrol after being offered a seat under the conditions described by the school). Tuition fees for the 2026/2027 academic year (annual and per‑term by year group) Note: tuition is published as an annual amount for 2026–2027; the school calendar is organised around three main teaching blocks across the academic year, so the per‑term figures below show the annual amount divided by three teaching terms (annual ÷ 3). The per‑term figures are presented to two decimal places. - PYP1–PYP5 (Grade 1–5): Annual tuition EUR 26,000 — Per term (annual ÷ 3) EUR 8,666.67. - MYP1–MYP3 (Grade 6–8): Annual tuition EUR 27,850 — Per term (annual ÷ 3) EUR 9,283.33. - MYP4–MYP5 (Grade 9–10): Annual tuition EUR 28,950 — Per term (annual ÷ 3) EUR 9,650.00. - DP1 (Grade 11): Annual tuition EUR 33,100 — Per term (annual ÷ 3) EUR 11,033.33. - DP2 (Grade 12): Annual tuition EUR 33,750 — Per term (annual ÷ 3) EUR 11,250.00. Discounts - 10% discount for the second child. - 20% discount for the third child. - 50% discount for the fourth child. What the annual tuition includes - Textbooks, online books and photocopies of the syllabus; PYP 3–5 school trip; day field trips; school hoodie and school t‑shirt (PYP and MYP only); yearbook; MYP & DP subscriptions to online resources; DP 1–2 exam fees. Additional costs (examples and typical amounts) - MYP yearly school trip (5 days/4 nights): approximate budget EUR 1,300 to EUR 1,600 (all MYP students are required to participate). - DP school trip: additional cost where applicable (amount varies by trip). - School pictures (variable). - From Grade 4 onwards, students must have their own laptop with access to Google Workspace or Microsoft Office (family purchase). - Homework club / Garderie / After‑school activities: these are charged in addition to tuition; the school's after‑school services list a standard rate of EUR 10 per hour for Homework Club (PYP 1–5) and Garderie (5:00–6:00 pm). - Hot lunch (annual charge): example published annual hot‑lunch fees for 2025–2026 were EUR 1,608 for PYP and EUR 1,488 for MYP 1–3; hot‑lunch billing is handled separately and payment instructions (bank transfer) are supplied on the hot‑lunch order form. Boarding and transport - Montgomery International School is a day school; the school does not operate its own school bus service and families typically use third‑party transport providers. There are no boarding fees. Billing schedule and payment terms (summary of published practice and available public details) - Tuition figures are published as annual amounts for the 2026/2027 academic year. The school's admissions steps indicate that the family submits enrolment documents and payment in order to secure a seat and that families are asked to upload proof of payment as part of enrolment. The public fee page does not list a detailed invoice schedule or standard instalment dates for tuition; the school's published materials (e.g., specific programme forms and admissions policy) show that payments by bank transfer with proof of payment are used for specific items. Refund information - Waiting‑list fee: the published admissions policy states that the EUR 2,000 waiting‑list payment is refundable if the family chooses not to enrol after being offered a seat (the policy specifies a two‑week confirmation window and refund conditions). - No other specific refund schedule for tuition or registration is published on the school's publicly posted tuition page for the 2026/2027 fees (refund terms for other fees are not specified in the public fee summary). Fee payment options and bank details (as shown on published school forms) - Bank transfer is used for fee payments shown on school forms. The school account shown on hot‑lunch and other school forms: Banque Fortis — IBAN BE64 0015 8979 6452 — BIC GEBABEBB (payment forms instruct families to send proof of payment). - The admissions process requires families to upload proof of payment to complete enrolment steps. Summary of key fee figures (2026/2027) - Annual tuition (PYP1–PYP5): EUR 26,000; per term EUR 8,666.67. - Annual tuition (MYP1–MYP3): EUR 27,850; per term EUR 9,283.33. - Annual tuition (MYP4–MYP5): EUR 28,950; per term EUR 9,650.00. - Annual tuition (DP1): EUR 33,100; per term EUR 11,033.33. - Annual tuition (DP2): EUR 33,750; per term EUR 11,250.00. - One‑time registration fee (new students): EUR 2,000; annual administration fee (returning students): EUR 1,650. - Hot lunch (example annual rates): PYP EUR 1,608; MYP 1–3 EUR 1,488 (hot‑lunch payments require bank transfer details and proof of payment on the order form). (Where an exact billing timetable, instalment plan schedule, or a broader set of published payment methods for tuition was not listed on the public tuition page, the school's admission materials and payment forms indicate that payment by bank transfer with proof of payment is used for named items and that families must submit payment to secure a place. For enrolment, refer to the school's admissions procedure which sets out that payment is required to secure a seat and proof of payment must be uploaded.)	Fee details Application fee - Application fee (all grades): EUR 2,000. Tuition fees (annual) — by year group - Preschool (ages 2.5–3): EUR 22,590. - Pre‑Kindergarten (4 years old): EUR 25,030. - Kindergarten (5 years old): EUR 37,760. - Grades 1–2 (ages 6–7): EUR 40,670. - Grades 3–6 (ages 8–11): EUR 41,400. - Grades 7–9 (ages 12–14): EUR 46,825. - Grades 10–12 (ages 15–18): EUR 49,715. - Intensive Learning Support (for ILS students): EUR 25,155 plus the relevant grade‑level tuition. Per‑term (how fees are presented and typical payment structure) - Fees are published and invoiced on an annual basis; the school issues invoices annually in May for the following school year. Because fees are set and invoiced annually, there is no official per‑term charge published. Families may choose the school's instalment plan, which spreads the annual tuition into monthly payments; the instalment plan divides tuition into up to 10 monthly payments (July–April). For simple budgeting, an approximate per‑term figure can be obtained by dividing the annual tuition by the number of academic terms you choose to use for your own budgeting (the school does not publish an official per‑term schedule). Billing schedule and payment terms - Invoices for the following school year are issued annually in May. - Invoices for students joining during the school year are issued before the enrolment date. - Invoices are payable within 30 days of the invoice date or prior to the student's start date. - The parent (or legal guardian) is always responsible for payment of school fees regardless of any employer arrangements. Payment methods and terms - All fees are due and payable in EUR. Payments can be made by bank transfer to The International School of Brussels at BNP Paribas Fortis. - Bank transfer details (for payments by bank transfer): SWIFT: GEBABEBB; IBAN: BE71 2100 5790 1069. - Consolidated monthly invoices (for items such as lunch, athletics, music, ISB Plus) can be paid by bank transfer or by direct debit (SEPA mandate). - There is no published option on the fee page for credit‑card payment; available options shown are bank transfer and SEPA direct debit. Instalment / payment plan - A family instalment scheme is available to individuals (not open to companies paying tuition). - Typical administrative fee: EUR 200 per family, annually. - The instalment calculation uses the cost of tuition plus an interest rate of 1% above the current EUR Central Bank rate and may be divided into up to 10 monthly instalments (July–April). - The instalment scheme applies only to tuition fees (does not include bus fees or other related costs). Bus fees - Return trip (annual): EUR 3,140. - One‑way only (annual): EUR 2,385. - Bus fees are charged annually; there is no reimbursement of bus fees due to an inability to use the service. - The school offers a separate payment plan for families who would otherwise find it difficult to pay the annual bus fee. Other costs and optional charges - Cafeteria: daily lunch is paid through student lunch accounts; a lost lunch card carrying fee of EUR 10 will be billed if a card is lost. - Co‑curricular activities and ISB Plus: costs for clubs, activities and ISB Plus are optional and billed through the consolidated monthly invoice. - Musical instrument rental: EUR 210 per year (rental from the school). - Athletics fees: billed per season/per sport; typical player fees noted are EUR 270 for JV/Varsity teams and EUR 170 for U14 teams (additional travel costs for tournaments billed separately). - International Baccalaureate Diploma Programme: students taking the IB will be billed for IB exam and administrative fees and any external examination expenses requested by the student. - Other potential costs (examples): school trips, seasonal team travel, specialty courses, therapy or additional student support services — these are billed as they occur via the consolidated invoice. Refunds, adjustments and pro‑ration - Students who leave early: for students who have paid the full tuition (and bus, where applicable) and who leave before the last day of January, 25% of the tuition (and bus) fee will be reimbursed by the school. If a student leaves after the last day of January, there is no reimbursement of fees already paid. - Students who enrol late: the school publishes monthly pro‑rata amounts by level (the published schedule shows the reduced amounts for each month if a student starts after the academic year begins). The published pro‑rata schedule is used to calculate fees for late enrolment and for partial months; students starting within a month will be asked to pay for the full month. Boarding - Boarding is not provided as a standard full‑time option; the International School of Brussels operates as a day school for its student population. (Overnight/boarding arrangements may be referenced only in limited, event‑specific contexts such as camps where temporary overnight accommodation is arranged.)
Diving deeper	Diving deeper
Boarding arrangements	Boarding arrangements Extended Day provides after-school care and activities for all age groups. Homework Club (PYP 1-5) runs 4:00–5:00 pm (10€/hour); Garderie (5:00–6:00 pm) costs 10€/hour; After School Support for Secondary (3:45–4:45 pm) is free. Extracurricular activities are offered according to demand.	Boarding arrangements Boarding is available during Elite Week; beds are limited. Athletes and coaches stay at Auberge des Trois Fontaines, about 10 minutes from the ISB campus, and are supervised by coaches. A bus transports participants between the hostel and ISB; breakfast is provided at the hostel and dinner is eaten with ISB on campus.
Uniform requirement	Uniform requirement —	Uniform requirement There is a dress code for Middle School.
Food options	Food options Lunch options include a hot lunch service for all primary and MYP 1-3 students. Students may bring their own lunches and warm them in microwaves; from age 14 (MYP4), students may go outside the school grounds for lunch with parental approval.	Food options The campus includes an Elementary School Cafeteria and a Middle School Cafeteria on site.
House system	House system —	House system —
Governance and ownership	Governance and ownership MIS is part of the Ermitage Education Group. Jim Doherty is the CEO of the Ermitage Education Group.	Governance and ownership The school is governed by a Board of Trustees and is a private not-for-profit international school.
Academics	Academics
Curriculum details	Curriculum details The school offers an IB programme with two options: an English-language programme with French as a second language, and a bilingual English–French immersion programme. The IB continuum includes Primary Years Programme (PYP), Middle Years Programme (MYP) and Diploma Programme (DP).	Curriculum details ISB uses English as the main language of instruction. French is offered from age 2.5, with a French bilingual programme from Grade 5; additional language options include Dutch, Spanish, and Japanese. The Home Language Programme integrates languages spoken at home into the curriculum. The curriculum is flexible and inquiry-based, with personalised learning pathways across ECC to High School.
Student teacher ratio	Student teacher ratio —	Student teacher ratio 7:1
Exam results	Exam results 100% pass rate for the IB Diploma Programme for seven consecutive years; average 34 points; 50% of students graduate with the bilingual or the advanced bilingual diploma.	Exam results IB Diploma results for 2025 show 160 graduates, 141 IB Exams taken, 118 Diploma candidates, 27% of IB Courses with accommodations, an average IBDP score of 35, a 100% pass rate, 49% bilingual diplomas, and an average Course score of 5.5. AP results show 84 students (Grades 9–12) completed 136 exams in 13 subjects, with an average AP score of 3.84, 90% of exams scoring 3 or higher, 103 students taking AP Exams, 19 AP subjects taught, and 44% achieving a perfect score of 5. BTEC results show a 100% pass rate with 2 pathways offered and 33 students taking BTEC, with 27 students working towards external BTEC qualifications.
Higher education progression	Higher education progression Graduates have been admitted to universities worldwide, including Bocconi University (Italy), Delft University of Technology (Netherlands), Erasmus University Rotterdam (Netherlands), Essec (France), Imperial College London (UK), King's College London (UK), KU Leuven (Belgium), Maastricht University (Netherlands), McGill University (Canada), Sciences Po Grenoble (France), Sorbonne (France), Université Libre de Bruxelles (Belgium), University College London (UK), University College of Utrecht (Netherlands), University of Amsterdam (Netherlands), University of British Columbia (Canada), University of Edinburgh (Scotland), University of Glasgow (Scotland), University of Saint Andrews (Scotland), and University of Toronto (Canada).	Higher education progression ISB offers five graduation pathways, including IB Diploma, AP, BTEC, US Diploma, and another pathway. Universities worldwide offered ISB students places in 2024-25, demonstrating strong progression to higher education globally.
Gifted and talented	Gifted and talented —	Gifted and talented The Inclusion & Challenge Department provides High-Ability Programmes for advanced learners.
Academic calendar	Academic calendar —	Academic calendar —
Wellbeing & support	Wellbeing & support
Social & emotional learning	Social & emotional learning The school implements the IB curriculum with a focus on personal development. It aims to develop independent critical thinkers and to enhance students' social and communication skills.	Social & emotional learning ISB provides school-wide counselling services to support students and families. A dedicated Inclusion & Challenge Department brings together specialists in Learning Support, Counselling, Psychological Services, and Health to address academic, personal, and social needs. A Multidisciplinary Student Study Team develops tailored strategies to help students thrive. The school's approach promotes wellbeing through accessible professional support across grade levels.
Special educational needs (SEN)	Special educational needs (SEN) —	Special educational needs (SEN) An Inclusion & Challenge Department coordinates Learning Support and High-Ability Programmes to meet diverse learning needs. The department develops tailored strategies for individual students and collaborates with families and teachers to support learning. A multidisciplinary approach ensures appropriate challenge and support across age groups.
English as an additional language	English as an additional language The school offers an English-only programme with French as a second language, and a bilingual programme with French and English immersion. Students can choose the bilingual track even if they are not fluent in French, developing proficiency in both languages.	English as an additional language English Language Development (ELD) supports students who are still developing English, with specialist ELD teachers providing tailored in- and out-of-class support. Home Language Programme offers seven languages in the Lower School (Dutch, French, Hebrew, Japanese, Korean, Spanish, Swedish) and five in the Upper School, integrating language for learning and reading skills. ISB's bilingual learning pathways begin with French from 2.5 years old and may extend to core subjects taught in French or bilingual diplomas.
Mental wellbeing	Mental wellbeing A supportive, inclusive and open minded environment supports students' mental wellbeing. The school focuses on personal development, independence and social communication skills to help students navigate challenges and grow confidence.	Mental wellbeing Counselling services at ISB proactively support students and parents on academic, personal, social, and career topics. Psychological Services provide personalised plans based on in‑house assessments and collaboration with external professionals, with strong links to local mental health experts. Health Services employ nurses, speech and language therapists, and occupational therapists to maintain a healthy learning environment.
Safeguarding	Safeguarding —	Safeguarding ISB is committed to safeguarding and promoting the wellbeing of students. The school has a Board‑approved Code of Conduct and Child Protection Policy aligned with international safeguarding standards. The Designated Safeguarding Lead coordinates the Safeguarding Committee and implements practical procedures. Training on child protection occurs annually, and all staff undergo vetting, including a Certificate of Good Standing from Belgian authorities.
Safeguarding policy	Safeguarding policy —	Safeguarding policy —
Facilities	Facilities
Facilities overview	Facilities overview Montgomery International School is located in the heart of Brussels in a former 1907 double hôtel de Maître building. Since January 2020, a 500 m2 additional facility was acquired 50 m from the main building to accommodate DP students. The campus includes a fully equipped science lab, a 3D printer, a comprehensive bilingual library, a study area for older students, and a space dedicated to theatre classes. The school leverages its central location to visit international institutions, museums, galleries and theatres. Theatre performances take place in a professional theatre in the capital, and field trips throughout the year visit theatres, museums, parks or festivals.	Facilities overview The International School of Brussels sits on a 40-acre campus in the Forêt de Soignes. The campus is set in a forest setting and is steps away from a UNESCO World Heritage Site. It includes the Early Childhood Centre, Elementary School, Middle School, and High School buildings, libraries, an Arts Annex, and spaces for theatre and the arts. There are science, music, and visual arts spaces across the campus, including a digital music classroom and theatre spaces. Athletics and outdoor learning spaces complement the academic spaces, and the campus provides a safe bus service and easy access to public transport.
Sports facilities	Sports facilities Physical Education classes take place in nearby sport centres: V.U.B, Centre Mounier, and Centre Sportif Etterbeek. These facilities allow students to practice sports such as climbing, swimming, basketball and fencing.	Sports facilities ISB has extensive athletics facilities including two gyms, two athletics fields, a running track, a fitness room, and a Strongbox outdoor gym. A dojang for martial arts, a tennis bubble, indoor rock-climbing walls, and a dance studio are also on site. The forest setting provides trails for training in nature. ISB offers swimming courses through a partnership with Brussels University (VUB) in facilities provided by the partner university. Swimming is available from Grade 3, and track, cross country, and tennis begin from Grade 5.
Academic facilities	Academic facilities The campus features a fully equipped science lab, a 3D printer, a comprehensive bilingual library, and a study area for older students. DP students have access to the Brussels University library (ULB) for research, and there is a dedicated space for theatre-related activities.	Academic facilities The campus includes Middle School Science Laboratory and High School Science Laboratory. There are digital music classrooms and dedicated arts spaces, including a theatre, an arts annex, and visual arts classrooms. Middle School Library and High School Library provide learning spaces for students. The campus also features the ICC studio and high school atrium and commons. Library, science, music, and arts facilities are integrated across the school's departmental buildings.
Extra curricular facilities	Extra curricular facilities Theatre performances are held in a professional theatre in Brussels. The school organises multiple field trips throughout the year to theatres, museums, parks and festivals, enriching experiences beyond the classroom.	Extra curricular facilities ISB offers after-school activities through the ISB Plus Programme. The Athletics Programme includes over 50 competitive teams across 15 sports. Swimming, track, cross country, and tennis are available at various grade levels. Camps are run in English and are open to both ISB and non-ISB participants. The ISB Plus and camps programs provide a broad range of activities beyond the classroom.
Parent experience	Parent experience
History	History Founded in 2007 by David Gerone, Montgomery International School began with a vision that no child should be left behind. In 2013, his wife Francesca Vona joined to manage the administrative side. The school adopted the International Baccalaureate programme in 2015. In 2022, MIS achieved the best IBDP score in Brussels, exceeding the global average by 5 points. In September 2023, MIS joined the Ermitage Educational Group, which includes ERMITAGE INTERNATIONAL SCHOOL (EIS) in Maison Lafitte and SAINTE VICTOIRE INTERNATIONAL SCHOOL (SVIS) in Aix en Provence; David Gerone stepped down from his role.	History ISB was established in 1951 as a not-for-profit organisation and is the oldest international school in Belgium. It began as The American School of Brussels, moved to Boitsfort, and in 1953 the Château des Fougères lease was signed and the official name was changed to The International School of Brussels. The High School division opened in 1960, and the first senior graduating class occurred in 1962. The first ISB International Festival was organized by the PTA in 1977.
Community	Community At Montgomery International School, a school community is an essential part of the educational experience, with the relationships between students, teachers and parents being key to a safe, encouraging learning environment. A strong community encourages students to be engaged and to feel supported. Through a dynamic Parents' Association and activities such as field trips, cross-age tutoring, student‑teacher meetings, and family‑oriented events, students develop a sense of belonging and learn cooperation, responsibility and respect, which supports academic success. The school maintains parent communication through class representatives who share updates via dedicated WhatsApp groups.	Community Community engagement is a core part of the ISB learning experience, rooted in global citizenship and respect for our local environment and its people. From human rights projects and volunteering in the Lower School to the CAS programme in the Upper School, students participate in meaningful volunteer work on campus and with local organisations. This involvement fosters social awareness, leadership, and a lifelong commitment to making a difference. ISB reports 6,200 total hours volunteered, 480 students involved, 27 base community engagement partners, 6,900 meals, 500 winter care kits, 1,100 hygiene packages, and 1,100 feminine hygiene packages provided.
Parent teacher association	Parent teacher association Montgomery International School Parents' Association is the school's body focused on fostering a sense of community and building strong connections between the school, faculty and parents. The Association organizes events throughout the year to bring the community together, including a Welcome New Families Picnic, Halloween Party, Saint Nicholas Party, Quiz Night, Happy Hour, Coffee Mornings, End-of-Year Picnic, Les 15km de Woluwé, Teachers' Appreciation Day, and an International Food Festival. A parent representative is appointed per class to share important updates from the school via dedicated WhatsApp groups, ensuring parents stay informed and connected.	Parent teacher association The first ISB International Festival was organized by the PTA in 1977. The festival ran from 1977 to 1979. In 1978 the Métairie building was acquired and added to the campus to house the music and High School French programmes. In 1979 the tennis courts were added.
Extra-curricular	Extra-curricular
Academic & intellectual	Academic & intellectual Montgomery International School is a fully accredited IB school serving students aged 5 to 19. The IB curriculum emphasises academic rigour and personal development. The Diploma Programme develops skills in research, communication, self-management, and critical thinking. The school offers two tracks: an English-language programme with French as a second language and an advanced bilingual programme with English–French immersion.	Academic & intellectual ISB Plus Programme of after-school activities helps students discover passions outside the classroom. The co-curricular programme offers around 90 activities across three seasons for all grade levels, providing opportunities for personal development beyond the curriculum. It provides a safe, inclusive space for students to learn new skills, refine existing ones, and explore their passions.
Arts & creative	Arts & creative The theatre/media class is a core part of the curriculum. Theatre is taught for two hours per week. End-of-year performances take place in a Brussels theatre, giving students a platform to showcase their work. Students create decors and costumes, reinterpret original plays or develop original scripts; past productions include A Christmas Carol, Oliver Twist, The Lion King and The Jungle Book.	Arts & creative ISB Plus offers arts and creative activities including Arts & Crafts, Drama, Ballet, Modern Dance, Textile Design, Digital Discovery, Comic Book Discovery, Creative Photography, and Filmmaking. Activities renew each season to keep students engaged, with Upper School offerings expanding into additional creative options. Through theatre, film, music, and visual arts, ISB students explore their imagination and develop their unique artistic voice.
Cultural & language	Cultural & language Montgomery offers two tracks: an English-language programme and an Advanced Bilingual track. In the English track all subjects are taught in English with French as a second language, while the bilingual track provides immersive instruction in both French and English. In the PYP instruction is split 50% French and 50% English; in the MYP it is about 70% English and 30% French; in the DP a second language is studied as Language and Literature with another subject taught in the same language (for example History in French). The bilingual programme is designed to develop academic competency in both languages, even if students are not initially fluent.	Cultural & language English is the main language of instruction. French lessons are offered from age 2.5, with a bilingual French programme from Grade 5 onward. Additional language options include Dutch, Spanish, and Japanese, and ISB offers a Home Language Programme that integrates languages spoken at home into the curriculum.
Social & hobbies	Social & hobbies Extracurricular activities include Art Club, Coding School in collaboration with Logiscool, and Dance. French Club and Italian lessons are offered as part of after-school programs. Piano and guitar lessons are available, taught by qualified instructors. Tennis lessons are offered in collaboration with a local club Set Wahis. Library Book Club operates for primary students, and Team Sport is organized after school, including basketball, soccer, handball and volleyball.	Social & hobbies ISB Plus includes a wide range of after-school activities to suit varied interests. The Supervision Programme provides a safe, fun space with board games, drawing, and puzzles for younger students, plus monthly activity themes such as story time, sing-a-longs, and crafts. Lower and Upper School activities include Arts & Crafts, Badminton, Ballet, Basketball, Chess, Climbing, Digital Discovery, Drama, Fencing, Modern Dance, Move & Explore, Tennis, Textile Design, and more.
Community & service	Community & service Service Learning is a core value at Montgomery International School and is integrated in both PYP and MYP. In PYP, four-week projects cover topics from environmental initiatives to arts and community outreach, including Eco Warriors, Sunshine Squad, Culinary Club and Winter Singers. In MYP, students undertake self-initiated and class-based activities linked to the curriculum, developing caring and responsible citizenship. DP students participate in CAS (Creativity, Activity, Service) and collaborate with local organizations such as Serve the City to address local and global issues.	Community & service Community engagement is a core part of the ISB learning experience, including human rights projects and volunteering in the Lower School and a CAS programme in the Upper School. Students participate in meaningful volunteer work on campus and with local organisations. Current ISB projects include supporting homeless, low-income, elderly, and refugee communities; organizing monthly activities for refugee children and for children living in social care; serving meals and providing kits to those in need; and engaging with local Red Cross and other service activities.
Leadership & professional	Leadership & professional University Counseling introduces students in MYP5 to ensure that their university choices align with their course selections. A yearly programme includes presentations by university representatives and opportunities to visit international higher education fairs and attend campus visits. There is additional support in DP1 and DP2 during the university application process, offered in individual meetings with a counselor and in small group sessions.	Leadership & professional The school runs a CAS programme in the Upper School for creativity, activity, and service experiences. ISB also maintains a Leadership Team led by the Director, with Heads of Elementary, Middle, and High School and senior directors overseeing curriculum, inclusion, and student life. The Director of Athletics and Activities leads sports and activities, reflecting the school's emphasis on leadership and co-curricular opportunities.
Lifestyle & wellbeing	Lifestyle & wellbeing Dance classes focus on technique and body alignment, improvisation and choreography, with projects that are typically presented during school shows. Team Sport is organized by a school coach and includes activities such as basketball, soccer, handball and volleyball. Extended Day provides after-school options including Homework Club for PYP 1-5 from 4:00 to 5:00 pm, Garderie from 5:00 to 6:00 pm, and After School Support for secondary students from 3:45 to 4:45 pm. Italian language lessons are also offered free of charge to families by permanent teachers from the Italian Ministry of Foreign Affairs.	Lifestyle & wellbeing ISB Athletics offers over 15 sports and more than 50 competitive teams, enabling students to try multiple activities and often become three-sport athletes. The facilities include two gyms, two athletics fields, a running track, a fitness room, a Strongbox outdoor gym, a dojang for martial arts, a tennis bubble, indoor rock-climbing walls, and a dance studio. The school also partners with Brussels Sports Association for swimming courses at state-of-the-art facilities.
Language provision	Language provision
Language provision	Language provision English and French are taught at Montgomery International School. In the English programme, all courses are taught in English and French is learned through Language Acquisition. The bilingual track uses both languages, with PYP 50% French and 50% English and MYP 70% English and 30% French. The Advanced Bilingual Diploma includes French Language and Literature and History taught in French, with other subjects taught in English.	Language provision English is the primary teaching language. The Home Language Programme offers seven languages in the Lower School: Dutch, French, Hebrew, Japanese, Korean, Spanish, and Swedish, and five languages in the Upper School. The English Language Development (ELD) programme supports multilingual learners to access the curriculum.
Bilingual teaching	Bilingual teaching Two programmes start from PYP2: the English programme and the Advanced Bilingual programme. In the English programme, all subjects are taught in English, with French taught as a second language. The bilingual track provides instruction in both English and French, with the PYP balance at 50% English and 50% French and the MYP balance at 70% English and 30% French. In the Diploma Programme, the Advanced Bilingual Diploma requires French Language and Literature and History taught in French, with other subjects in English; students can choose it even if they are not fluent in French.	Bilingual teaching ISB offers multiple pathways to bilingualism. French is introduced at 2.5 years old. From Grade 5, students who have reached an appropriate level of French proficiency (as well native speakers) can study some core curriculum subjects in French. In High School, a significant number of students graduate with a bilingual diploma, studying language and literature in either their Home Language and English or French and English. Bilingual learning opportunities exist up to Grade 10 and are supported by the Home Language Programme.
Immersion programs	Immersion programs English and bilingual schooling with French and English immersion courses. In the bilingual track, instruction is immersive in both languages, with PYP delivered 50% French and 50% English and MYP balancing toward English with French as a language subject; the Advanced Bilingual Diploma includes French-language study in certain subjects.	Immersion programs ISB provides immersion through bilingual learning pathways and the Home Language Programme. From Grade 5, some core curriculum subjects can be studied in French. The Home Language Programme offers seven languages in the Lower School and five languages in the Upper School, integrated into weekly timetables.
Reputation	Reputation
Awards	Awards —	Awards —
Accreditations	Accreditations —	Accreditations The school is accredited by the International Baccalaureate, the Council of International Schools, and the Middle States Association of Colleges and Schools.
Admissions	Admissions
Admissions	Admissions Schedule a virtual appointment or a school visit with the link we will send you. Meet with our Admissions Team. Apply on our Open Apply Admissions platform to begin the formal application. STEP 2: Share your child's last two years of school reports when applicable. Submit a reference when applicable. The admissions team reviews these documents to assess fit with MIS programs and language expectations. STEP 3: Grade placement is confirmed based on submitted documents and any necessary assessments. A place is offered at MIS once placement is determined. Where necessary, placement tests in Math, English and/or French may be requested to determine the best course of study. The outcome ensures registration aligns with the PYP, MYP or DP track. STEP 4: Fill out the enrolment forms on our Admissions Portal and upload the proof of payment. The enrollment forms complete the formal enrollment, and payment confirms the registration. Parents may receive confirmation that the enrollment is submitted and moving to final steps. STEP 5: Student is enrolled. Our team will be in touch to schedule a placement test (if applicable) and confirm the first day of school. You will be contacted with next steps, including start date and any onboarding information.	Admissions 1. Submit the ISB admissions application with the required application fee. The application form must be accompanied by the application fee, and applications will not be processed until the full application fee is paid. If the application is withdrawn, 50% of the fee is refunded; if a Financial Aid application is denied or the family does not accept the offer and withdraws, 75% is refunded; if a completed application is placed in a waiting pool for 60 days and the family cancels, a full refund is available. 2. After the completed application is received, an admission decision is typically issued within 7 to 10 working days. A decision may be delayed if additional information is needed or during school-holiday periods. 3. Students can join ISB at any point during the school year, typically before 1 May. A suitable start date is determined in collaboration with the family and approved by the Head of School. IB Diploma students cannot begin after the beginning of October if their courses are not transferable to ISB. 4. Grade-level placement is based on the prior educational experience and the student's age. In some cases, a placement test may be given to accurately place a student. 5. The ISB Bus Service is the most popular transport for commuting to and from school. Some students may use public transportation, ride a bike, or be dropped off and picked up by their parents. 6. ISB runs waiting lists when necessary. When classes are full, a waiting pool for the affected class is opened, and the Admissions Team explains how waiting pools are managed. 7. ISB offers a limited number of financial aid opportunities each year based on eligibility criteria. ISB also provides an English Language Development Programme at all levels to support non-English-speaking students. 8. ISB has an Inclusion and Challenge Programme to meet learning needs and ensure appropriate placement. 9. The school day hours vary by section: ECC Preschool 08:40–15:30 (Mon, Tue, Thu, Fri) and 08:40–12:30 (Wed); ECC Pre-Kindergarten 08:40–15:30 (Mon, Tue, Thu, Fri) and 08:40–12:30 (Wed); ECC Kindergarten–Grade 2 08:40–15:35; Elementary School 08:40–15:35; Middle School 08:35–15:40; High School 08:35–15:40.
Scholarships	Scholarships —	Scholarships ISB offers a Financial Aid Programme to assist families experiencing temporary financial hardship; the aid is primarily designed for existing families and is available for a maximum of two consecutive years. Applications for Financial Aid must be submitted with the regular ISB application and supporting materials, and are considered up to March 31 until the budget is exhausted. ISB also offers a Scholarship Programme for merit-based scholarships open to students of all nationalities; these scholarships are offered for two consecutive years for Grades 7–12 and are designed to provide access to ISB for students not currently in the ISB community; scholarship criteria include English skills, high achievement in English, alignment with ISB's values and mission, overall academic achievement, and demonstrated talents. All scholarship applicants must complete the Scholarship Programme Form and attach supporting materials. Applications for the next school year should be received by March 31. The Scholarship Committee includes the School Director, the Director of Advancement, the Director of Finance and Operations, the Finance Manager, and an Academic Panel. For further questions about scholarships, contact the Admissions Office.
Waitlist	Waitlist —	Waitlist Yes, ISB runs waiting lists when classes are full. A waiting pool is opened for the affected class, and the Admissions Team explains how waiting pools are managed. Waiting lists help accommodate students when space becomes available.
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