Education is free and compulsory for children between the ages of 6 and 16 years, but children may enter school at 5 and continue until they are 19. In some areas subsidized kindergartens are maintained for children between three and five years of age. Primary education consists of infant classes during the first two years and six annual grades designated standards 1, 2, 3, and 4 and forms I and II. Free secondary education is available to all children who have completed form II or who have attained the age of 14. On the completion of the third year of secondary education, pupils take a national examination for a school certificate.