The objectives of this study were 1) to study education administrators' exertion of authority 2) to compare education administrators' exertion of authority under Phitsanulok Primary Educational Service Area Office 1. The variables were divided by the administrators' experiences and the sizes of the institutions. The population in this study was 1,161 education administrators and teachers. The number of the samples was 291 determined using Krejcie and Morgan Table, stratified random sample of the sizes of the institutions, and simple random sampling. The study used a 5-point rating scale questionnaire for item-objective congruence ranged between 0.80-1.00 and the reliability was at 0.962. Data analysis statistics were mean, standard deviation, t-test statistic, one-way ANOVA test, and pair difference test by Scheffe's method. The results were found as follows. 1) In general, the level of education administrators' exertion of authority was high. The aspect with the highest mean was the authority of information technology access ([x-bar] = 4.17), while that with the lowest mean was the authority of punishment ([x-bar] = 3.56). 2) There was no difference, in general, in the comparison of education administrators' exertion of authority divided by work experience. However, when each aspect was considered, there were statistically significant differences in the authority of punishment and the sizes of the institutions at statistically significant level of 0.05.