The Turkish education system has three main levels: primary education lasting 4 years, lower secondary education lasting 4 years, and upper secondary education lasting 4 years. Together, these comprise 12 years of compulsory education. There are about 62,000 schools and 17.2 million students in Turkey. Primary education aims to provide students with basic knowledge and skills to become good citizens. Secondary education prepares students for higher education or a profession through more specialized coursework. Turkey has 173 universities that provide 4-year bachelor's programs, with the most popular fields of study being law, medicine, education, and engineering.