doris
doris
Find Schools
Events
Saved schools
My account
Parent Guide Parent testimonials Community Transparency Charter About For Schools
Currency
C

Cosmos International School

Bulgaria, Sofia

Save school
Share
Navigate

· Reviewed by · Co-founder & CEO

Independently researched by doris.
Not yet claimed by the school
Claim your profile
The school at a glance
Instructs in English, Bulgarian
Fees €8,259
Ages 3 - 18 years
Pupil numbers 400
Type Co-educational
Opened 1930
Bus Service No
Academic offering
Curriculum Cambridge (Primary), Cambridge (Secondary), Cambridge IGCSE, Cambridge A Levels, IB (DP)
Taught languages English, Bulgarian, German, Spanish, Russian, Italian
Strengths Languages, Sport, Visual and Creative Arts
Clubs Arts and Creative, Cultural and Language, Lifestyle and Wellbeing
Stages Preschool, Primary School, Middle School, Secondary School, Sixth Form
Introduction

Cosmos International School offers a Cambridge curriculum from preschool to upper secondary, including Cambridge Primary, Lower Secondary, IGCSE and options for A‑Levels or IB Diploma. The school serves ages 3 to 18 and uses English‑medium instruction alongside Bulgarian language studies. In Primary, students study Cambridge Primary English, Cambridge Primary Mathematics, Cambridge Primary Science and Art & Design, with Bulgarian language and literacy; additional languages include German, Spanish, Russian and Italian. Lower Secondary (grades 5–7) covers Cambridge English, Mathematics, Science, Art & Design, Digital Literacy and ICT, plus Bulgarian language, History and Civilization, Geography, Chemistry, Physics and Biology, with sports, theatre, yoga, gardening and camps; German, Spanish, Russian and Italian remain available. Upper Secondary (grades 8–12) centers on IGCSE, with pathways to IB or A‑Levels; core subjects include English, Mathematics, Science, History, Geography and ICT, with Wellbeing and options like Economics, Travel and Tourism and Foreign Languages. Curriculum runs across ages.

school, 2121 Osoitsa, Bulgaria

The Essentials

Cosmos International School has 400 pupils, instruction in English, Bulgarian.

Location
Located in the village of Osoitsa in the Gorna Malina municipality near Sofia, Bulgaria. The school address is Osoitsa, Cosmos Intl. School. The village of Osoitsa sits within the Sofia region and the school serves residents of Osoitsa and nearby areas.

Stages
Primary; Lower Secondary; Upper Secondary & Advanced

Type
International school

School day structure
School days Monday–Friday 08:00–18:00.

Bus service
Transportation with school buses from and to Sofia; transportation with school buses in the region. Fees: from and to Sofia 250 EUR; region 200 EUR.
Diving Deeper

Boarding Arrangements
Boarding is available for Lower Secondary students. The boarding fee is 600 BGN per month (255 EUR), or 5,400 BGN (2,775 EUR) for the school year.

Food Options
Meals (fruit, lunch, PM snack) are provided. A food fee of 270 BGN (138 EUR) applies.

Governance and Ownership
Cosmos International School is a private secondary school licensed by the Ministry of Education and accredited by the Cambridge International Programme.
Fees

Annual tuition at Cosmos International School ranges from EUR 8,259 for 2026/27.

Application fees
- The application fee for a trial day is 100 EUR (195.58 BGN). This fee includes trial days, personalised feedback on the trial, meals during the trial (fruit, lunch, PM snack) and transport services if required.

One-off / upfront fees
- School supply fee (payable annually): 300 EUR (586.75 BGN).
- Deposit fee (place-holding/security): 1,000 EUR (1,955.83 BGN).

Tuition fees by year group and payment option
- For the 2026/2027 academic year (general school rate):
- Monthly paid tuition (September–June): 850 EUR per month (1,662.46 BGN).
- Tuition paid on a 5-month plan (with 3% discount): 4,122 EUR total for the spring and autumn terms.
- Annual tuition paid in full (with 8% discount): 7,820 EUR for the school year (15,294.59 BGN).
- A special monthly rate for families in the local region: 680 EUR per month (1,329.96 BGN).

- For the 2025/2026 academic year (detailed by school stage):
- Primary: application fee 100 BGN (50 EUR); school supply fee 400 BGN (210 EUR); deposit 1,000 BGN (500 EUR); monthly tuition (Sept–June) 1,400 BGN (715 EUR); 5-month plan 6,650 BGN (3,392 EUR); annual paid in full 12,600 BGN (6,426 EUR).
- Lower Secondary: application fee 100 BGN (50 EUR); school supply fee 500 BGN (260 EUR); deposit 1,000 BGN (510 EUR); monthly tuition (Sept–June) 1,400 BGN (715 EUR); 5-month plan 6,650 BGN (3,392 EUR); annual paid in full 12,600 BGN (6,426 EUR).
- Upper Secondary & Advanced (2025/26 figures): application fee 100 BGN (50 EUR); school supply fee 500 BGN (260 EUR); deposit 1,000 BGN (510 EUR); monthly tuition (Sept–June) 2,000 BGN (1,022 EUR); 5-month plan 9,500 BGN (4,857 EUR); annual paid in full 18,000 BGN (9,203 EUR). A limited-time discounted monthly figure and alternative annual amounts were also published for specific enrolment promotions.

Billing schedule and payment terms
- Monthly billing option runs September through June (ten monthly installments).
- Alternative billing options are available with discounts: a multi-payment 5-month plan (discount applied) and a one-payment annual option (larger discount applied). Specific discount rates shown are: 3% for the 5-month plan and 8% for annual payment in the 2026/2027 schedule; earlier published schedules showed 5% (5-month) and 10% (annual) discounts for 2025/2026.
- A deposit is required to secure a place (deposit amount listed under one-off fees).

Boarding (where applicable)
- Boarding was published as an option in the 2025/2026 materials at 600 BGN per month (255 EUR per month) or 5,400 BGN (2,775 EUR) for the full school year. Boarding details were listed separately from day-student tuition.

Other costs and recurring extras
- Food (fruit, lunch, PM snack): 180 EUR (352.05 BGN) per year in the 2026/2027 schedule; earlier figures for 2025/2026 appeared at different BGN/EUR amounts.
- Transportation (school buses): from/to Sofia 250 EUR (488.96 BGN) per year; regional routes 200 EUR (391.17 BGN) per year.
- Clubs and extracurricular activity fees (examples): judo 60 EUR (117.35 BGN); gymnastics 45–60 EUR depending on year and offer; breakdance 45 EUR; folk dance 45–50 EUR; chess 30–40 EUR; various clubs such as volleyball, handball, comics, film, art typically range around 20–39.12 EUR/BGN listed equivalents per activity. Camps and competition/olympiad fees are charged according to the specific offer and are payable in addition to tuition. Second foreign language books are listed at 80 EUR (156.47 BGN) where applicable.

Discounts and special rates
- Early-enrolment, sibling and local residence discounts have been published: example discounts include a high-school limited-time enrolment discount, second/third child discount of 10% (capped so total discounts cannot exceed 15%), and a special family rate (e.g., a published special rate of 1,000 BGN for families residing in Elin Pelin and Gorna Malina on earlier schedules).

Refund information
- Published fee materials list application, supply, deposit and tuition amounts but do not include a clear standalone refund policy or explicit text on which fees (if any) are refundable or non‑refundable in every circumstance within the fee documents reviewed. The deposit and application fees are shown as required payments but specific refund terms are not stated in the publicly published fee sheet and fee summary documents accessed.

Fee payment options
- The publicly posted fee schedules and fee PDFs list amounts, payment plans and discounts but do not specify accepted payment channels (for example, explicit mention of bank transfer, credit card, online payment provider or in-person payment methods is not included in the published fee documents reviewed). For confirmed accepted payment channels, contact by the school's published office email or telephone is required.

Notes on what was found and remaining items to confirm
- The fee overview above presents the published tuition, one-off charges, discounts, extras and boarding rates as published in the school's fee documents for 2026/2027 where available and for 2025/2026 where stage-specific or boarding figures were shown. The published materials reviewed do not contain an explicit, line-by-line refund policy or a list of accepted payment channels; those items were not stated in the fee schedules and fee summary documents accessed.
Academics

Cosmos International School teaches Cambridge (Primary), Cambridge (Secondary), Cambridge IGCSE, Cambridge A Levels, IB (DP) for students aged 3 to 18.

Curriculum
Cosmos International School uses the Cambridge International curriculum from preschool through upper secondary. In Primary, students study Cambridge Primary English, Cambridge Primary Mathematics, Cambridge Primary Science, and Cambridge Primary Art & Design, alongside Bulgarian language and literacy, Mathematics, the Natural World, and Man and Society; additional languages offered include German, Spanish, Russian, and Italian. Lower Secondary (5th–7th grade) covers Cambridge Lower Secondary English, Mathematics, Science, Art & Design, Digital Literacy and ICT Starters, plus Bulgarian language and literacy, History and Civilization, Geography, Chemistry, Physics, and Biology, with sports, theater, yoga, gardening and camps, and additional languages German, Spanish, Russian, Italian. Upper Secondary (8th–12th grade) centers on IGCSE, with foundations for IB or A-levels; subjects include English, Mathematics, Science (Chemistry, Biology, Physics), History, Geography, ICT, Wellbeing, and options such as World Literature, Biology Advanced, Chemistry Advanced, Physics Advanced, Economics, Business Studies, Travel & Tourism, ICT Advanced, and Foreign Languages, Art & Design, Bulgarian language and literature; Group I Language A includes English and Bulgarian; Group II Language B includes English, German and Spanish; a second foreign language is offered as well.
Parent Experience

History
The school was reborn after a large-scale project involving the private Cosmos Kids kindergarten, the residents of the village of Osoitsa in Gorna Malina municipality, and investor Ivan Nikolchev. Cosmos International School continues the vision of Cosmos Kids English Nursery and Kindergarten. It has nurtured the imagination and desire to learn in over 400 children for more than 14 years. The historic site includes a building project begun in 1926 by the mayor Dimitar Komitov, with Italian architects and builders; the school opened as Assen Zlatarov in 1930, featuring two towers and a clock mechanism. In 1955–1957 the Bulgarian Ministry of Education declared it the best school in the country for its processes, materials, and discipline, and the school remained open until 1989 when it was closed for lack of students.

Community
The Cosmos International School maintains a News/Blog with job postings and school announcements as of February 2026. Notable posts include the Creative Director being named an honorary member of BAGP on January 23, 2026. The site also reports a Special Prize and 14 Awards at the International Kings Olympiad on February 7, 2026. An Official position post on February 6, 2026 states the school is not affiliated with any organizations other than its core mission as a private secondary school.
Facilities

Academic Facilities
The Cambridge International curriculum is used to prepare students for the future. Primary covers Cambridge Primary English, Mathematics, Science, Art & Design, and Music, alongside Bulgarian language and literacy and a broad range of activities including Sports, Theater, Yoga, Gardening, herbalism and cooking. Additional foreign languages offered include German, Spanish, Russian and Italian. In Upper Secondary, students pursue IGCSE, with subjects such as English, Mathematics, Science (Chemistry, Biology, Physics), History, Geography, ICT and Wellbeing; there are pathways to A-levels or the International Baccalaureate program. Lower Secondary follows Cambridge Lower Secondary with English, Mathematics, Science, Art & Design, Digital Literacy and Bulgarian language and literacy, plus History and Geography; foreign languages are also offered.

Extra Curricular Facilities
Extra-curricular activities include Theater, Music and Art; Yoga; Gardening, herbalism, and cooking; Sports and Physical Education; Hiking, first aid, and camps; and exposure to additional foreign languages such as German, Spanish, Russian and Italian as part of the school's language offerings.
Extra-Curricular Activities

Academic & Intellectual
Cosmos International School uses the Cambridge International curriculum to prepare children for the future. The Cambridge curriculum provides a global standard, with programs that stretch, challenge and inspire learners, and qualifications valued by universities and employers worldwide. The school offers Cambridge Primary for early years and lower grades, Cambridge Lower Secondary, IGCSE, and options for A-levels and the IB program in upper secondary.

Arts & Creative
Art & Design and Music are part of the Cambridge Primary curriculum, and Theater is offered as a core subject. The arts are integrated into the primary program, supporting visual and performing arts alongside design and music. In lower secondary, Theater, cinema and digital art are part of the curriculum, with continued emphasis on Art and Design in upper levels.

Cultural & Language
Bulgarian language and literacy are taught, and the school offers additional foreign languages including German, Spanish, Russian and Italian. The IB program includes Group II languages such as English, German and Spanish, and Bulgarian language and literature remain a curricular focus. The lower secondary program also lists additional foreign languages including German, Spanish, Russian and Italian.

Social & Hobbies
Sports are included in the curriculum across primary and lower secondary. The curriculum also includes Oracy and Global Perspectives in lower secondary, and Theater, cinema and digital art as part of the arts and humanities offerings.

Lifestyle & Wellbeing
Wellbeing is a dedicated part of the upper secondary program. Yoga is included in the primary curriculum, and sports, physical education, gardening, herbalism and cooking form part of the holistic daily learning experiences. The curriculum also includes hiking, first aid and camps as outdoor activities.
Languages

Language Provision
Cosmos International School offers English and Bulgarian as the principal languages of instruction within the Cambridge curriculum. Bulgarian language and literacy are part of the primary program, and Bulgarian language and literature are included in lower and upper secondary. English is used across levels, including Upper-Secondary English. Additional foreign languages offered include German, Spanish, Russian and Italian; in the IB program, Language A covers English and Bulgarian, Language B covers English, German and Spanish, and a second foreign language option includes German and Spanish.

Bilingual Teaching
Cosmos International School teaches English and Bulgarian as core languages within the Cambridge framework. Bulgarian language and literacy are taught in primary, and Bulgarian language and literature are included in lower and upper secondary. English is taught across levels, including Upper-Secondary English. Additional foreign languages offered are German, Spanish, Russian and Italian; for the IB program Language A includes English and Bulgarian, Language B includes English, German and Spanish, and a second foreign language option includes German and Spanish.
Admissions

Admissions
The application fee for Cosmos International School is 100 BGN or 50 EUR. The fee includes trial days for your child; personalised feedback on your child's performance during the trial days; meals provided during the trial period (fruit, lunch, PM snack); and transport services if required. The 2026/2027 fee structure lists the full set of charges for Primary, Lower Secondary and Upper Secondary with monthly tuition, discounts and other fees.
School Events
The school has not added events
Search for more schools
Search schools in Bulgaria View all schools in Sofia View all schools in Bulgaria IB curriculum schools in Bulgaria Open days & tours in Sofia What is the IB curriculum? View all schools Search all schools