fifth pillar of the report, Higher education and training, the Swiss had a score of 5.79, which is the fourth highest among all the countries surveyed. According to one EPFL source, globally, 4 out of the 20 top labs in the field of AI are located in Switzerland. Cantonal school systems While compulsory schooling in Switzerland is between 9 and 11 years long, many of the specifics of the system vary by canton. In most cases, kindergarten lasts 1 to 2 years, primary level lasts 6 years, and the lower secondary level 3 years. In Ticino, there is a third, non-mandatory, kindergarten year, primary lasts 5 years, followed by 4 years of lower secondary. In some German speaking cantons kindergarten and the first one or two years may be combined into a Grundstufe or Basisstufe where they are all taught together in a single class. In the French speaking cantons (FR, GE, JU, NE, VD, VS) kindergarten is combined with primary to create 2 primary levels, each 4 years long. In 17 cantons, it is compulsory to attend pre-school. In almost all cantons, the municipalities are obliged to provide at least one year of pre-school classes. This table shows the school system for 2017/2018 and how the lower secondary schools are organized: Education demographics During the 2008/09 school year there were 1,502,257 students in the entire Swiss educational system. In kindergarten or pre-school, there were 152,919 students (48.6% female). These students were taught by 13,592 teachers (96.0% female) in 4,949 schools, of which 301 were private schools. There were 777,394 students (48.6% female) in the obligatory schools, which include primary and lower secondary schools. These students were taught by 74,501 teachers (66.3% female) in 6,083 schools, of which 614 were private. The upper secondary school system had 337,145 students (46.9% female). They were taught by 13,900 teachers (42.3% female) in 730 schools, of which 240 were private. The tertiary education system had 234,799 students (49.7% female). They were taught by 37,546 teachers (32.8% female) in 367 schools. See also Juvenile crime in Switzerland Johann Heinrich Pestalozzi - introducer of the "head, hand and heart" principle of education List of universities in Switzerland List of largest universities by enrollment in Switzerland Science and technology in Switzerland References External links educa.ch Swiss Media Institute for Education and Culture educa.ch Reports on Education in Switzerland sieps.ch Information Services on Swiss Private Schools and