چکیده (انگلیسی):

The general objective of this study is comparison of managers’ critical thinking of the elementary school,
guidance and high school for girls in Islamshahr city. The statistical society of this study is formed all school principals in
elementary school, guidance and high school of the ISLAMSHAHR city that their number is 140 people. The samples size
of the study included103 people who were selected classical randomly. To collect information was used 34 questions
questionnaires of the California Critical Thinking Skills Test (Form B) (CCTST). This research is a descriptive study and is
considered the element of survey plans assumptions. In present study the validity of the questionnaire was calculated
using Cronbach's alpha. The mentioned questionnaire has been implemented on sample group and has been done by
analysis of One-way variance (Anova) and (Tuky) test and the results of data analysis showed that the critical thinking
among elementary and high school principals in the field of analysis, there are significant differences.