Most countries have their school leaving age set the same as their minimum full-time employment age, thus allowing smooth transition from education into employment, whilst a few have it set just below the age at which a person is allowed to be employed.ducation is compulsory from the age of 5 to 18. Secondary education is divided in several levels, with vmbo students typically graduating at age 16, havo students at 17 and vwo students at 18. After obtaining a havo or vwo diploma, the student is no longer obligated to go to school regardless of their age.