| Kulosaari Secondary School Kulosaaren Yhteiskoulu | |
|---|---|
 Kulosaari Secondary School | |
| Location | |
 | |
Kulosaari, Helsinki | |
| Coordinates | 60°11′13″N 25°00′12″E / 60.187031°N 25.003297°E |
| Information | |
| Type | Secondary |
| Established | 1 October 1940 |
| Principal | Lauri Halla |
| Faculty | c. 100[1] |
| Grades | Lower secondary (grades 7–9), Gymnasium (Lukio) |
| Gender | Mixed |
| Enrollment | c. 900 |
| Language | Finnish, English |
| Campus type | Suburban |
| Website | www |
Kulosaari Secondary School (Kulosaaren Yhteiskoulu, abbr. KSYK) is a private secondary school located in Kulosaari, Helsinki, founded in 1940. It is an international school, teaching in both Finnish and English. The school comprises both lower secondary (yläaste) (grades 7–9) and upper secondary or gymnasium (lukio) stages, with approximately 900 pupils in total. Kulosaari is one of the leading gymnasia in the country by exam results.