The purposes of this research were to study the factors affecting the strategic leadership
of school administrators under the Chanthaburi Primary Educational Service Area Office in the 2016 academic year, and to empirically study the data collected about the appropriateness of those factors. The two main steps of the research were: 1) to construct a theoretical, conceptual draft of factors affecting school administrators’ strategic leadership in the 21st Century, 2) to test the congruence of the models used by administrators for strategic leadership. The sample consisted of 400 teachers in schools under the Chanthaburi Primary Educational Service Area Office. It was selected by many-step random sampling. The research instrument was a 5-rating scale questionnaire. It had 75 items and a discrimination of between .55 and .87. The reliability was .96. The statistics used for analyzing the data were: percentage, mean, standard deviation, Pearson’s product movement correlation coefficient and LISREL version 9.2 for Student.
The research findings were as follows: 1) There were 4 factors and 10 observed variables in the conceptual framework of the school administrators’ strategic leadership in the 21st Century. The 4 factors were: Core Competency, Good Organizational Culture, Co-Vision and Creative Thinking. 2) The test of the congruence of the empirical data with the conceptual framework showed the following results: Chi-Square = 24.27, p = 0.38908, GFI = 0.98, AGFI = 0.97, RMSEA = 0.012.