Primary education in Scotland focuses on breadth of subjects rather than depth, with children attending for 7 years from ages 5-6. Secondary education continues for 4 years with mandatory exams at age 15/16 in 8 subjects including English, math, science and a social subject. Students can then leave school or pursue higher exams, apprenticeships or vocational education. Scotland has many prestigious universities, with the oldest being St Andrews University established in 1413 as the third oldest English-speaking university in the world after Oxford and Cambridge.