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Bulgaria, Sofia
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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.
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.
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.
