Table 1.

Descriptive characteristics of the sample.

Description	Percent (%)
Gender
Men	26.8
Women	73.2
Age
20s	32.1
30s	36.7
40s	25.1
Above 50s	6.1
Teaching tenure
1–10 years	44.4
11–20 years	29.5
21–30 years	21.2
Above 30 years	4.9
School level
Elementary school	48.3
Middle school	19.2
High school	32.5
School type
Public school	84.2
Private school	15.8
Annual income (Thousand CNY)
Below 50	31.5
50–99	43.1
100–149	15.3
Above 149	10.1