The purposes of this study were to study the transformational leadership, the school administrative management on student assistant system and the relationship between transformational leadership and school administrative management on student assistant system of school under the office of Nakhonnayok Educational Service Area.     
	The samples were 322 school class advisors under the office of Nakhonnayok Educational Service Area. The instruments consisted of the questionnaires in 5 rating scales.    The analysis of data were Mean, Standard Deviation and Pearson?s Product Moment Correlation Coefficient.
	The result showed that the administrators had mainly transformational leadership at  the high level which  were inspiration, charismatic, individualized consideration, and intellectual stimulation. The school administrative management on student assistant system also showed at the high level which were individual reference, prevention and correcting, encouragement and development, screening and transferring. An analysis revealed that the correlation between transformational leadership and school administrative management on student assistant system was a positive level of the statistical significance difference at. 05
