Page 55 - Azerbaijan State University of Economics

Ercan Yılmaz, Gulnar Jafarova: Leadership and School Climate in Effective Schools: A Meta-
Analysis

When the correlation coefficients of the study are analyzed, it can be seen that
36.36% is at a low level (N=4), 36.36% is at a medium level (N=4) and 27.27% is at
a high level. When these are analyzed in terms of Fisher’s Z effect size, it is
noteworthy that 18.18% has a low effect (N=2), 18.18% has a medium effect (N=2),
36.36% has a strong effect and 27.27% has a very strong effect (N=3).

Effect size calculation based on the relationship between effective schools and
school climate was obtained from 6 studies. 50% of these studies (N=3) were written
as articles, 50% as doctorate dissertations (N=3), 33.33% were written in Turkey
(N=2) and 66.67% (N=4) were written in other countries. 33.33% of the studies
involved primary schools (N=2), 33.33% involved middle-schools (N=2), 16.67%
involved high-schools (N=1) and 16.57% involved primary, middle and high-
schools (N=1). The statistical information related to these studies is given below.

Table 2: Meta-Analysis Statistical Findings based on School Effectiveness and
School Climate

95 % Confidence
Interval for Fisher’s
Study N r Zr P
Z Effect Size
Alt Limit Üst Limit

BRYANT,2001 39 0,65 0,775 0,449 1,102 0.000
OKAFOR,2006 0.000
107 0,34 0,354 0,162 0,546
KARADAG,2008 0.000
89 0,733 0,935 0,724 1,147
MANAF VE OMAR, 2015 0.000
150 0,422 0,450 0,288 0,612
HAIRSTON, 2016 1143 0,42 0,448 0,390 0,506 0.000

SENEL,2016 400 0,51 0,563 0,464 0,661 0.000

When the correlation coefficients of these studies are analyzed, it can be seen that
16.67% of them have a low level of correlation values (N=1), 50% of them have a
medium level of correlation (N=3) and 33.33% of them have a high level of
correlation (N=2). In terms of effect size, 50% of the studies have a medium level of
effect (N=3), 33.33% of them have a strong level of effect and 16.67% have a very
strong level of effect (N=2),

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