The purposes of this research were to study and compare the administrative roles of school administrators under the Office of Chachoengsao Primary Educational Service Area.
The research samples determined by the proportional stratified random sampling method included 330 school teachers under the Office of Chachoengsao Primary Educational Service Area. The research instruments used for data collection were the 5 point scale questionnaires with the discrimination index level of 0.33 - 0.75 and the reliability level of 0.93. The statistics used for data analysis were percentage, mean, standard deviation, t-test, and One-way analysis of variance, and Scheffe is method of multiple comparison tests.