Level

Participants

Mean score

S.D.

School (Bangpleepattanasuksalai)

30

65.67

16.54

School size

235,225

40.77

18.84

School location

7924

43.94

19.35

Province

14,405

45.77

20.09

Region

152,559

44.51

20.01

Country

716,684

43.47

20.11