The US education system is decentralized, with each state and over 14,000 local districts setting their own laws and policies. Compulsory education ranges from ages 6 to 18. The pre-primary level includes kindergarten and preschool from ages 4 to 6. Primary education consists of elementary school spanning grades 1-5 or 6. Secondary education is high school covering grades 7-12 and awarding a diploma. Higher education includes vocational training and degree programs at institutions like community colleges, state universities, private universities, and technical colleges.