Level

Participants

Mean score

S.D.

School (Bangpleepattanasuksalai)

30

61.40

15.59

School size

235,253

41.15

12.69

School location

7925

42.97

12.88

Province

14,408

43.82

13.07

Region

152,573

43.14

13.10

Country

716,778

42.59

13.18