Children aged 1–5 years old are guaranteed a place in a public kindergarten ( or, colloquially, ''dagis''). Between the ages of 6 and 16, children attend compulsory comprehensive school. In the Programme for International Student Assessment (PISA), Swedish 15-year-old pupils score close to the OECD average. After completing the 9th grade, about 90% of the students continue with a three-year upper secondary school (''gymnasium''), which can lead to both a job qualification or entrance eligibility to university. The school system is largely financed by taxes.