Page 59 - Azerbaijan State University of Economics

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

When the table is analyzed, it can be seen that the effect sizes calculated between
school effectiveness and leadership display differences at a significant level in terms
of publication type and the school type involved in the study (p<.05). In terms of
publication type, it can be seen that the study written as a post-graduate dissertation
has the lowest effect size, whereas studies written as articles have the highest effect
size. In terms of the type of school involved in the studies, it is noteworthy that the
effect size calculated for the studies involving primary, middle and high-schools
together is at the lowest level and the effect size calculated for a study in which the
school type is not indicated is at the highest level. If the location where the study
was carried out in, a difference at a significant level was not observed (p>.05).
For the effect sizes calculated based on the relationship between school effectiveness
and school climate, moderator analysis was carried out in line with publication type
and location of this study. The results of the study are given in the table below.

Table 6: Results of the Effect Size-Moderator Analysis on the Relationship between
School Effectiveness and School Climate according to the Random Effects Model

Lower Upper
Variable k Zr Q Qb P
limit limit
School climate 6 0.559 0.429 0.690 26.225 0.000 *
Moderator [Publication 1.352 0.245
Type]
Article 3 0.636 0.407 0.865
Doctorate Dissertation 3 0.472 0.317 0.627
Moderator [Publication 2.136 0.144
Place]
Turkey 2 0.737 0.373 1.101
Foreign Countries 4 0.456 0.361 0.551

According to the results of the moderator analysis, a significant difference was not
found in terms of publication type and publication place (p>.05).

Publication partiality Analyses for Effect Size based on the Relationship between
School Effectiveness and Leadership and School Climate.

For the purpose of evaluating publication partiality for the calculation of effect size
based on the relationship between school effectiveness and leadership and school
climate, Rosenthal’s and Orwin’s Fail Safe N, Begg and Mazumdar rank correlation,
Egger regression intercept and Duval and Tweedie’s trim and fill method analyses
and explanations are given below.

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