All provinces and territories provide pre-primary education for 5-year-olds. School is compulsory until age 16 or 18, depending on the province or territory, and grade repetition is below the OECD average. Attainment in upper-secondary education is above the OECD average. Due to the structure of education systems in most Canadian provinces and territories, the proportion of students enrolled in vocational education and training (VET) programmes at upper secondary level is among the smallest in the OECD.