The study of the relationship between administrative skill and academic administration of private school directors under the Office of Chachoengsao Primary Educational Service Area II. The samples were 147 school directors and teachers under the Office of Chachoengsao Primary Educational Service Area II. The data collecting consisted of 5 rating scales questionnaires. The statistics for data analysis were Mean, Standard Deviation and Pearson's Product Moment Correlation. 
	The research results indicated that:
	1. The administrative skills of private school directors under the Office of Chachoengsao Primary Educational Service Area II both in overall and individual aspects were at the hight level which were conceptual skill, human skill, technical skill, leadership skill, teamwork skill and evaluating and rewarding skill respectively.
	2. The academic administration of private school directors under the Office of Chachoengsao Primary Educational Service Area II both in overall and individual aspect were at the hight level which were educational supervision, teaching materials; educational innovation and technology, development, internal quality assurance of educational institutions development, learning process development, institutional curriculum development, education measurement and evaluation, and accreditation of prior achievement, educational quality development research, academic promotion for: individuals; family; organization and others educational institution, educational guidance, academic cooperations with other educational institutes, learning resources development and academic promotion for community respectively.
	3. The administrative skill related positively to the academic administration  of private school directors at the level of .05 of statistical significant. 
