keskikoulu
Keskikoulu was a compulsory, nine-year comprehensive school system in Finland that operated from 1974 to 1990. Before its introduction, the Finnish education system was divided into a lower stage (kansakoulu) and an upper stage (oppikoulu). Keskikoulu aimed to provide equal educational opportunities for all children, regardless of their socioeconomic background, by integrating these two stages into a single, unified school structure.
The curriculum in keskikoulu was standardized nationwide, covering a broad range of subjects including Finnish language
Students typically entered keskikoulu at the age of seven and completed it at sixteen. Upon graduation, students