Basic education in Thailand is divided into:
Nursery school KG1 to KG3 for 3 to 6 year olds
Primary school P1 to P6 (Prathorn) for 6 to11 year olds
Secondary school M1 – M6 (Mattayorn) for 12 to18 year olds
Compulsory education in Thailand consists of 6 years of primary schooling called Prathorn (level P1 to P6) and 3 years of secondary schooling (level M1-M3).