การพัฒนารูปแบบการกำหนดขนาดโรงเรียนที่เหมาะสมเชิงเศรษฐกิจของโรงเรียนมัธยมศึกษา / ประเสริฐ จรรยาสุภาพ = The development of economic optimum school size determination models for secondary schools / Prasert Janyasupab
The purposes of this research were (1) to study and analyze the general characteristics of secondary schools. (2) to analyze the cost of education and study some factors that affect the recurrent cost, (3) to develop the models that minimized cost for optimum school size and (4) to compare the developed optimum school size with the available ones. Data used for this research were gathered from 1,069 secondary schools and they were analyed by the SPSS using these statistics: multiple regression analysis, factor analysis, analysis of variance, etc. Also, the Microsoft Excel program was used for linear programming and sensitivity analysis. The findings were as follows: 1. The ages and salaries of teachers, classroom sizes and the running time length were positively related to school sizes; on the onther hand, the number of students per teacher in each class and the teaching load per week were negatively related to school sizes. Schools in Bangkok running the longer time had the older teachers, the higher salary with the lower teaching hours whereas those in the eleventh educational region had opposite variable sizes. 2. Schools' recurrent cost and total cost were positively related to school sizes and urbanization; salaries and wages were the most important costs, followed by operations, equipment, materials and public utility expenditures which were allocated from the state without any relation with their real needs; a medium-size school spent the least cost per headcount. 3. Factors which were positively related to the recurrent cost included teacher's age and salary, number of teachers and students, number of classrooms, urbanization and years of school running; whereas ratio of students to teachers, size of class were negatively related; however, urbanization, class sizes and years of school running of big with large-size school were not significantly related to the recurrent cost. 4. On consideration of the available expenses, it was found that the economic optimum school size was a medium size school as theleast cost per headcount was only 8,801.32 baht. It the developed models were applied with the ratio of 25 students per teacher, classroom size of 40, and teaching hours were 25 per week, the lowest optimum recurrent cost per headcount was 7,796.76 baht.
