The purposes of the research were to investigate administrators change leadership characteristics, schools effectiveness and the relationship between administrators change leadership characteristics and schools effectiveness under Chachoengsao Primary Educational Service Area Office 2. The samples consisted of 158 administrators and 312 teachers. The research instruments was a set of 5 item-rating scale questionnaire. Mean, Standard deviation and Pearsons Product-Moment Correlation were employed for data analysis.
	The research results were as followings ;
	1. The administrators change leadership characteristics under Chachoengsao Primary Educational Service Area Office 2 as a whole was at a high level, ranking by the mean scores; continual professional development, value of human resources, risk management, good communication skills, vision, It is believed that the organization is learning the importance of learning organizations.
	2. The schools effectiveness under Chachoengsao Primary Educational Service Area Office 2 as a whole was at a high level, ranking by the mean scores; the ability to solve the problem in schools, the ability to schools adaptation and development, the ability to encourage students on positive attitudes, and the ability to generate the students to high learning achievements, respectively.
	3. The relationship between administrators change leadership characteristics and the schools effectiveness under Chachoengsao Primary Educational Service Area Office 2 was high level positively significant difference at the level of .05.
