The Greek educational system has three main levels: primary education, secondary education, and university education. Primary education consists of kindergarten and primary school, and is mandatory until age 12. Secondary education is divided into middle school (mandatory) and high school, with high schools further divided into general and technical. High school is completed with national exams that determine university acceptance. Private tutoring is also commonly used to supplement lessons. The educational system aims to provide students with well-rounded general knowledge along with specialized subjects to prepare them for university or the job market.