Appendix 2: Sample of schools

Sampling

ERO investigated curriculum principles and teaching as inquiry in 109 schools (67 primary and 42 secondary) reviewed in Term 2 and 3, 2010. The number of classrooms evaluated in each school was dependent on the school size as shown below.

Table 9: Classrooms by school roll

Roll number

Number of classes

<300

one

300 - 700

two

700 – 1500

three

1500

four

Tables below show the demographics of the sample. The sample has been compared to the national percentage[23] and comments made, where relevant, about any statistical differences between the observed (sample percentage) and expected (national percentage) values. The differences between observed and expected values were tested using a Chi square test. The level of statistical significance for all statistical tests in this report was p<0.05.

Table 10: Schools by decile

School decile group

Number of schools

Percentage of sample

National percentage

Low decile schools (decile 1-3)

24

20

32

Medium decile schools (decile 4-7)

53

50

39

High decile schools (decile 8-10)

32

30

29

Total

109

100

100

Table 10 shows that the sample was not representative of national figures in terms of decile. Compared to the national sample, the sample for this evaluation was over represented by medium decile schools and under represented by low decile schools. These differences were statistically significant.

Table 11: Schools by size

School size

Number of schools

Percentage of sample

National percentage

Very small

4

4

11

Small

19

17

26

Medium

35

32

36

Large

37

34

19

Very large

14

13

8

Total

109

100

100

Table 11 shows that the sample was not representative of national figures in terms of school size. Compared to the national sample, the sample was over represented by large and very large schools, and under represented by very small, small and medium schools.

Table 12: Schools by locality

School locality

Number of schools

Percentage of sample

National percentage

Main urban

75

69

53

Secondary urban

7

6

6

Minor urban

9

8

12

Rural

18

17

29

Total

109

100

100

Table 12 shows that the sample was not representative of national figures in terms of school locality. Compared to the national sample, the sample was over represented by main urban schools and under represented by minor urban and rural schools.

Table 13: Number of schools sampled by school type

School type

Number of schools

Percentage of sample

National percentage

Full primary

(Years 1-8)

26

24

44

Contributing primary (Years 1-6)

35

32

32

Intermediate (Year 7 & 8)

5

5

5

Special school

(Years 1 -15)

1

1

2

Secondary (Year 7-15)

10

9

4

Composite (Year 1-15)

7

6

4

Secondary (Year 9-15)

25

23

9

Total

109

100

100

Table 13 shows that the sample was not representative of national figures in terms of school type. Compared to the national sample, the sample was over represented by composite, secondary (Years 7-15 and Years 9-15) schools, and under represented by full primary and special schools.