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Sønderborg International School

Denmark, Sønderborg

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The school at a glance
Instructs in English, Danish
Fees DKK 20,350 - 32,025
Ages 3 - 16 years
Type Co-educational
Opened 2007
Bus Service No
Academic offering
Curriculum Cambridge (Secondary), Cambridge IGCSE, British Curriculum, Bespoke Curriculum
Taught languages Danish, German
Strengths STEM, Outdoor Education, Languages
Clubs Arts and Creative, Cultural and Language, Leadership and Professional
Stages Kindergarten, Elementary, Middle School
Introduction

Sønderborg International School (SIS) is a Cambridge International School in Denmark offering a Cambridge-based path from Primary through Upper Secondary with a Nordic context. The campus serves pupils aged 3–16 across Primary (Year 1–4), Lower Secondary (Year 5–7) and Upper Secondary (Year 8–10). The curriculum blends Cambridge instruction with a bespoke Danish‑English program, small class sizes, and cross‑curricular learning that includes Forest School. In Upper Secondary, students pursue Cambridge IGCSE qualifications, studying English, Maths, Science, Global Perspectives, Danish, German, History and Business Studies, with Danish First Language available for native speakers. The school's Kindergarten, founded in 2016 in a private‑public partnership with Sønderborg Municipality, anchors early years in a wider community. Facilities include accessible academic spaces and opportunities to tour during Open School Day. Extracurriculars feature a Student Council, Career Week, and an After School Program, while Life Skills and experiential learning underpin daily education. A welcoming, globally aware community.

Agervang 14, 6400 Sønderborg, Denmark

The Essentials

Sønderborg International School has instruction in English, Danish.

Location
The school is located at Agervang 14, 6400 Sønderborg. The School, ASP, and Afternoon Club share this address on the Agervang campus. The campus is in Sønderborg, Denmark.

Stages
The school offers Kindergarten. The Cambridge Program provides primary through secondary education, including Cambridge Secondary 1 (11-14 years) and Cambridge Secondary 2 (14-16 years) with Cambridge IGCSE exams and Danish language exams.

Type
The school is a private foundation known as The International School of Sønderborg.

Additional learning support
The school is inclusive and focuses on the individual student. Learning supports English and Danish across reading, writing, listening, and speaking; by the end of primary and secondary programs students are expected to reach CEFR levels in both Danish and English, with language immersion programs for late entrants.

Country affiliation
Denmark

School day structure
Mon-Thu 08:00–15:00. Friday 08:00–14:30.
Diving Deeper

Uniform Requirement
The school does not have school uniforms. The dress code is loose but decent. Exposed shoulders are not allowed in provocative outfits; crop tops are not allowed; hats, caps, and other headgear are not allowed; cleavage for girls is not permitted. The headmaster has the last word in judging clothing as provocative.

Food Options
Students must bring a nutritious lunch every day; there is no on-site food service and no possibility to buy food at the school. Food should not contain too much sugar or white bread. Chocolate, chips, candy, and soda are not allowed. Cake can be brought only for special events like birthdays and class parties.

Governance and Ownership
The school is The Private foundation of The International School of Sønderborg, a private educational institution governed independently. The Cambridge International Curriculum is followed and the teaching language is English, except in language subjects such as Danish, German and other languages. The School Board consists of five members selected by and from the Parents Association; board members are elected for three-year terms, with two new members elected each year and two deputies elected for one year. The Board is responsible for the overall management of the school and is accountable to the Minister of Education for finances and operations. The school operates from Agervang 14, 6400 Sønderborg; government subsidies and school fees fund the school. The CVR number is 333 50589.
Fees

Annual tuition at Sønderborg International School ranges from DKK 20,350 to DKK 32,025 for 2026/27.

Application & registration fees
- Registration fee (one-off, non-refundable): DKK 600.
- Enrolment fee (one-off): DKK 2,500.

Tuition (school) fees — amount, billing and per-year calculation
- Monthly school fee (applies to day-school tuition): DKK 1,850 per child.
- Billing schedule: school fees are billed 11 times per school year; each payment is due in advance on the 1st of the month. Total annual tuition (11 payments): DKK 20,350 per child (DKK 1,850 × 11).
- Sibling discount: DKK 185 per month for the third child and onwards (applies from child number three).

After-school care, clubs and selected additional recurring charges
- After School Program (ASP) – monthly fee for Year 1–4: DKK 750.
- Holiday ASP – fee per week: DKK 500.
- Morning ASP (early care) — listed fee shown in the school's fee document.
- Afternoon Club / ASP for Years 5–10 — monthly fee shown in the school's fee document (DKK 750 listed in the current fee sheet).

One-off / other specified charges
- Safety equipment for science (Years 6–10): DKK 170.
- Yearly Parent-Teacher Committee (PTC) fee per child: DKK 175.
- Lost bus card: DKK 150.
- Administrative charge for failing to register for PBS (automatic payment service): an administrative charge (DKK 100 per payment) is applied if PBS is not used for collection.

Field trips and one-off activity costs
- Field trips are extra and budgeted by year group: maximum billed cost for a field trip should not exceed one monthly school fee for Years 1–6 and two monthly school fees for Years 7–10; field-trip costs are invoiced over two months where applicable.

Billing schedule and payment terms
- Frequency: fees are charged 11 times per school year and are due in advance on the 1st of each month. Families are urged to register for PBS (Denmark's automatic payment system) within six months of registration.
- Bank transfer details: the school provides bank account information (Broager Sparekasse) with Reg. No., Account No., IBAN and SWIFT for payment by bank transfer.
- If PBS is not used, an administrative charge applies; missed or late payments may incur reminder charges as listed in the school's published fee documents.

Boarding
- Boarding is not offered; the school operates as a day school with Kindergarten, After School Program and day-time curriculum only.

Uniforms and clothing costs
- There is no compulsory uniform fee item listed in the school's published fee documents and parent handbook; costs for personal clothing, sports kit or optional branded items are not specified as a compulsory fee in the school's fee schedule.

Refunds, withdrawal and related rules
- Registration fee: one-off and non-refundable.
- Withdrawal notice: parents must notify the school in writing; a minimum of one month's written notice at the end of a calendar month is required. School fees apply to the final month and the following month during the notice period. Official transcripts and transfer certificates are issued after de-registration procedures are completed and outstanding fees are paid.

Summary of common payment methods
- PBS (automatic direct-debit) — the school requests families sign up for PBS for automatic collection and applies administrative charges where PBS is not used.
- Bank transfer — IBAN and SWIFT details are published for direct bank payments to the school's account.

(Amounts are stated in Danish kroner: DKK. All recurring and one-off fees above are taken from the school's current published admission/registration and parent information documents.)
Academics

Sønderborg International School teaches Cambridge (Secondary), Cambridge IGCSE, British Curriculum, Bespoke Curriculum for students aged 3 to 16.

Curriculum
SIS offers education at three levels: Primary (Year 1-4), Lower Secondary (Year 5-7), and Upper Secondary (Year 8-10). The curriculum is holistic and delivered in small classes, with cross-curricular learning and options such as Forest School and the Cambridge IGCSE pathway. In Upper Secondary, students work toward IGCSE qualifications and study English, Maths, Science, Global Perspectives, Danish, German, History and Business Studies. Danish First Language is offered to students who speak Danish at mother tongue level, following the Ministry of Education's Fælles Me5l for Danish, with the final exam Folkeskolens Afgangsprf8ve for 9. Klasse. Modern Foreign Languages are included across levels.
Wellbeing

Social and Emotional Learning (SEL)
The school supports and promotes the students' social and emotional development.

Special Educational Needs (SEN)
The school is inclusive and focuses on supporting the individual, whatever their strengths or areas for development.

English as an Additional Language (EAL)
Education is delivered in English and Danish, with additional English and Danish language teaching.

Mental Wellbeing
Life at SIS focuses on developing the student's physical, social and emotional well-being.
Parent Experience

History
The school is a Cambridge International School affiliated with the University of Cambridge and offers International Examinations. Cambridge Secondary 1 (11–14 years) and Cambridge Secondary 2 (14–16 years) are offered, with Cambridge Checkpoint for Secondary 1 and Cambridge IGCSE exams after Secondary 2; Danish language exams are also taken. The Cambridge Program page notes SIS has a long-established history delivering Cambridge qualifications. The SIS Kindergarten was founded in 2016 as a joint private-public partnership with Sønderborg Kommune.

Community
SIS has a multilingual, multicultural community with nearly 30 nationalities. The school emphasizes active involvement from families and a partnership between parents and staff. The Parent Teacher Committee (PTC) is made up of dedicated parents, teachers and administrators who work together to support the school and organize events such as Welcome Back Breakfast, Meet & Greet for new families, Summer BBQ, Winter Ball, Lighting of the Christmas Tree, and Easter Egg Hunt.

Parent Teacher Association (PTA)
Parent Teacher Committee (PTC) is made up of dedicated parents, teachers and administrators who work together to support Sønderborg International School. The PTC organizes events such as Welcome Back Breakfast, Meet & Greet for new families, Summer BBQ, Winter Ball, Lighting of the Christmas Tree, and Easter Egg Hunt. The PTC enhances the school community by facilitating regular meetings and strengthening parent–teacher partnerships.
Facilities

Facilities Overview
The school is located at Agervang 14, Sønderborg, 6400. Sønderborg International School is a Cambridge International School affiliated with the University of Cambridge and offers Cambridge examinations. The Cambridge Program provides progression from primary through secondary, with Cambridge Secondary 1 (11 to 14) and Cambridge Secondary 2 (14 to 16) and Cambridge IGCSE exams, alongside Danish language exams. STEM subjects (Science, Maths, and English) are taught alongside Danish language, foreign languages and humanities. An Open School Day offers guided tours of classrooms and facilities, giving prospective families a view of the learning environment. The international Kindergarten operates in partnership with Sønderborg Municipality in Engelshøj and has lunch and fruit time as part of its program.

Academic Facilities
Sønderborg International School is a Cambridge International School, delivering the Cambridge framework for primary through secondary. Cambridge Secondary 1 and 2 are offered, with students entering for Cambridge Checkpoint and then Cambridge IGCSE exams, as well as Danish language exams. Subjects include Mathematics, English, Danish, Science, Humanities, Religious Education, German, Business Studies, Design and Technology, and Art & Music, with Sports as a subject. The curriculum combines English-language Cambridge instruction with Danish examinations (FP9) and supports progression to A-level equivalents and local options. Pedagogy emphasizes Activity-Based Learning, Experiential Learning, and a Safe & Enabling Environment, with small class sizes enabling more one-on-one attention. Life skills such as social skills, thinking skills (critical, creative), decision making and emotional development are integrated into the curriculum.

Extra Curricular Facilities
The After School Program (ASP) runs for Years 1–4 on a subscription basis, with opening hours 12:45–16:45 Mondays to Thursdays and 12:45–15:45 Fridays. The program focuses on developing motor skills, following the rules of games, expressing oneself through Art and Music, exploring the world, conducting experiments, organizing games and play, social skills and personal responsibility, using weekly themes built around social and cultural events and student input. Beyond ASP, SIS hosts events such as Career Week with visiting professionals to inspire students. The school also runs an Open School Day to showcase the learning environment to prospective families.
Extra-Curricular Activities

Academic & Intellectual
The Cambridge Program is used, affiliated with the University of Cambridge, and offers Cambridge Secondary 1 and Cambridge Secondary 2. Students complete Cambridge Checkpoint after Secondary 1 and Cambridge IGCSE after Secondary 2, with Danish language exams also taken. The curriculum includes STEM subjects (Science, Maths, and English) alongside Danish, foreign languages, and humanities, taught in English. Small class sizes support individual progress and a pathway from primary to secondary.

Arts & Creative
Art and Music are part of the curriculum, and Design & Technology includes Home Economics, Art and Design, and Forest School.

Cultural & Language
Danish and German are taught as modern foreign languages, with Danish First Language available for native Danish speakers; Danish language exams are supported within the Cambridge pathway; English is used through Cambridge and Danish language exams are offered.

Social & Hobbies
Student Life includes a Student Council elected annually, giving students a voice in school wellbeing. Project Weeks broaden learning beyond academics, and Career Week exposes students to professionals.

Leadership & Professional
Student leadership is fostered through the Student Council, and Career Week is hosted to expose students to professional pathways.

Lifestyle & Wellbeing
Life at SIS emphasizes physical, social and emotional well-being within a safe and enabling environment; Forest School and experiential learning are part of the holistic learning experience.
Languages

Language Provision
The Cambridge Program uses English as the language of instruction with Cambridge examinations. Danish is taught as a subject, and Danish language exams are taken. German is taught as a language subject. The curriculum includes Mathematics, English, Danish, Science (Biology, Chemistry, and Physics), Humanities (History and Geography, Global Perspectives), Religious Education, Sports, Language (German), Business Studies, Design and Technology (Home Economics, Art and Design, Forest Schooling), and Art & Music. The school offers Cambridge Secondary 1 (11 to 14 years) and Cambridge Secondary 2 (14 to 16 years) with Cambridge IGCSE exams, and Danish language exams are also part of the program. This pathway supports progression to EUC SYD (IB Diploma, HTX, EUX) and to local Danish secondary schools.
Admissions

Admissions
How to register: Sønderborg International School is happy to assist with the enrolment process. To arrange an appointment or get more information, contact: email [email protected], telephone +45 74 43 01 10. Documents available electronically include: APPLICATION, CONSENT PHOTOS / VIDEOS, TRANSFER CERTIFICATE. Application Procedure: If you would like to place your child on the waiting list with a deferred start, use this process: 1. Complete the application form for each child. 2. Print and sign the application form on page two; signatures from both parents if they share custody. 3. Scan both pages and email to [email protected], or deliver to the mailbox outside the school. 4. Transfer the registration fee of 600.00 DKK per child. Bank details are provided in the Admission and Registration document. Documents you need to fill out to register: APPLICATION, CONSENT PHOTOS / VIDEOS, TRANSFER CERTIFICATE. Other documents: ADMISSION TO SIS, ADMISSION AND REGISTRATION, CAMBRIDGE - A GUIDE TO PARENTS. Leaving the School / De-registration Procedure: For de-registration, provide at least one month's written notice to the headmaster; school fees apply to the final month; return all school-books; Official transcripts and Transfer Certificates are issued upon request after de-registration and payment of fees.

Waitlist
If you would like to place your child on the waiting list with a deferred start, use the same application process described above.
School Events
The school has not added events
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