Ten provinces with least percentage of secondary graduated employee: 2004 - 2006
  2004  
Rank Provinces %
1 Mae Hong Son 15.23
2 Chiang Rai 15.79
3 Tak 16.54
4 Chaiyaphum 17.31
5 Kamphaeng Phet 17.52
6 Surin 18.11
7 Sakon Nakhon 18.83
8 Lampang 19.42
9 Pattani 19.46
10 Supan Buri 19.59
  Whole Kingdom 25.40
  2005  
Rank Provinces %
1 Mae Hong Son 16.02
2 Kamphaeng Phet 16.17
3 Chiang Rai 16.56
4 Yasothon 17.25
5 Sakon Nakhon 17.37
6 Surin 17.87
7 Tak 18.32
8 Maha Sarakham 18.45
9 Trat 18.50
10 Loei 18.56
  Whole Kingdom 25.12
  2006  
Rank Provinces %
1 Mae Hong Son 13.26
2 Yasothon 15.02
3 Nan 15.68
4 Surin 17.63
5 Kamphaeng Phet 18.37
6 Chiang Rai 19.06
7 Si Sa Ket 19.11
8 Sakon Nakhon 19.18
9 Tak 19.20
10 Nong Bua Lam Phu 19.42
  Whole Kingdom 25.99
Statistical Forecasting Bureau,  National Statistical Office