Abstract: The present environmental condition is in crisis and it is getting worst as day pass. The main problem is the educational administration and the long range solution of this problem. It is very important that the administration should have knowledge, opinion and good environmental behavior. The aims of this study are: Development of training program to reinforce the guide of environmental study for educational institute administrator under Kalasin educational service area office zone 1. To test and compare the knowledge before and after the training and to reinforce the guide of environmental education for educational institute administrator in 5 factors. To test the opinion of the guide of environmental study for educational institute administrator. To study and compare the result performance of environmental study for educational institute administrator in 5 factors according to experience and size of educational institute. To study the behavioral condition of guide in changing the environmental study for educational institute administrator in 4 factors namely, influential, motivation, stimulate to use the intellectual and individual relationship determination. The people are the administrator of educational places and 40 deputy directors in educational department of secondary school under Kalasin educational service area office 1 with tools use for this research are the training program, questionnaire to examined the knowledge, questionnaire to examined the opinion, questionnaire to examined the guide of modification and questionnaire to evaluate the environmental study performance and the statistic applied in this research are in percent, average point, standard deviation, t-test and F-test (One-way ANOVA and One-way MANOVA). The research shows that: The training programs developed by research and development is as qualified as the specified criteria. After the training, the institution administrators gained the leadership as knowledge in very high level of over 80%, as attitude is in high level and as the performances in environmental education within the institution is in high level as well. The institution administrators gained the leadership as knowledge in general and in each area are in very significantly high level comparing to their knowledge and leadership before the training, or 0.5 according to the statistic. The institution administrators has a better attitude towards environmental education leadership as knowledge in general considering in each area, mostly in the highest level. The performances of the institution administrators result in the environmental education within the institutions in general and those areas are high comparing to the experiences of administration in different institutions, the performances in the environmental education within the institutions are similar in general. Considering in each area, the institution administrators who got >10 years experiences have better performances than those who are in the posts for 5-10 years. When comparing to the different sizes of institutions, there is a significant differences in the performances of the Institution Administrators in general at 0.05 according to the statistic. The institution administrators in large institutions have better performances in 3 areas of personnel relationship in the institutions, environmental management in the institutions and the co-operation between environment and community than those who work in medium size institutions.