The basic structure of education for the princes, boys of noble birth, and commoners was adopted by the court and people of Ayutthaya and still prevailed in the early reigns of the Bangkok period. If is worth mentioning that during the reign of King Narai the Great, a book for the study of the Thai language entitled Chindamani was written and became a popular text book in duetime. It continued to be in use up to H.M.King Chulalongkorn's reign (1868-1910). It is generally accepted as the first textbook of the Thai language. However, it should also be noted that such education was of an academic type as it did not provide for occupational training which was generally handed down within the family or acquired through an apprenticeship.