Main Article Content
The objectives of this research were to study and create the linear structural model of casual factors affecting schools effectiveness of secondary school in the southern under The Office of the Basic Education Commission. The mixed research approach was applied and consisted of two parts: The qualitative research which conducted through in-depth interview with ten educational experts. The quantitative research conducted by questionnaire through 541 teachers. The research instruments used for analyzing the data were a structured interview form and a five rating scale questionnaire with coefficient of reliability at .94. The statistical devices included descriptive statistic, Correlation coefficient, Confirmatory factor analysis and liner structural model analysis was done by AMOS. The research findings were as follows: (1) The casual factors directly affected the school effectiveness was school climate. It was followed by management behavior, school competency and administrator trait. Meanwhile administrator trait indirectly affected the school effectiveness through management behavior and school climate, the Management behavior indirectly affected the school effectiveness through school competency and school competency indirectly affected the school effectiveness through school climate. They could predict effectiveness of secondary school in the southern by 93 percent with statistical significance at .01 level. (2) The model of casual factors affecting schools effectiveness of secondary school in the southern under The Office of the Basic Education Commission were showed their congruity with reliable and consistent the empirical data.