The purposes of this study were to investigate administrators roles, internal quality assurance performance for basic school and also the relationship between administrators roles and internal quality assurance performance for basic school
	The samples consisted of 113 administrators and 300 teachers under Chonburi Primary Educational Service Area Office 2. 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 results were as followed:
	1. The Administrators roles under Chonburi Primary Educational Service Area Office 2 as a whole was at a high level, ranking by the mean scores; there were aspect    of decision roles, interpersonal roles and information roles respectively.
	2. The Internal quality assurance performance for basic school under Chonburi Primary Educational Service Area Office 2 as a whole was at a high level, ranking by the mean scores; there were aspect of the quality of the education development plan, quality standards of education, annual reporting on the quality of education, monitoring the quality of education, improving the quality of continuing education, plan for improving the quality of education, the management systems and information and the standard of education respectively.
	3. The relationship between administrators roles and internal quality assurance performance for basic schools under Chonburi Primary Educational Service Area Office 2 was positively significant difference at the high level of .05
