Number of schools and Percentage

2000

2004

2012

classes

Perm.

Temp.

Open

Perm.

Temp.

Open

Perm.

Temp.

Open

0

10

5.55%

108

62.1%

158

90.8%

2.31%

115

66.4%

158

91.3%

9

4.9%

111

61.3%

168

92.8%

1-10'

71

39.4%

61

35.1%

16

9.19%

60

34.7%

54

31.2%

14

8.09%

69

38.1%

64

35.3%

13

7.18%

11-20'

64

35.6%

4

2.29%

0

(0%)

77

44.5%

4

2.31%

1

0.5%

76

41.9%

6

3.31%

0

0%

21-30'

22

12.2%

0.57%

0

0%

26

15.02%

0

0%

0

0%

19

10.5%

0

0%

0

(0%)

0ver 30

7

3.89%

0

(0%)

0

(0%)

6

3.5%

0

(0%)

0

(0%)

8

4.4%

0

(0%)

0

(0%)