Table 6 Percentage of population by grade of school completed : 1960 - 1990 census years
 
Census years Not attending school Primary Secondary University
1960 1/ 38.1 58.4 3 0.5
1970 26.4 68 4.9 0.7
1980 16 72.4 9.4 2.2
1990 10.7 70.7 13.6 5
       
       

1/ : Primary means Pratom 1 - 4 including Matayom 1 - 3
Source : Population and Housing census 1960, 1970,1980 and 1990, National Statistical Office