The purposes for this research were to study: 1) the using information technology under Saraburi Primary Educational Service Area Office 1, 2) the school administration under Saraburi Primary Educational Service Area Office 1, and 3) the relationship between using information technology and school administration under Saraburi Primary Educational Service Area Office 1. The samples of this research were 296 teachers under the office of Saraburi Primary Education Area Office 1. The questionnaires were 5 rating scales with reliability of using information technology was 0.96 and school administration was 0.93. The statistics used for analysis of the data to obtain various descriptive statistics were frequency, percentage, mean, standard deviation, Conbach's alpha coefficient and Pearson's correlation coefficient. The finding were as follows: 1. The using information technology under Saraburi Primary Educational Service Area Office 1 as a whole was at a high level. When considering each individual aspect was also at a high level too. The sequence of them were that: the use of the information, the data collection, the data processing, the inspection data, data analysis, and the data storage. 2. The school administration under Saraburi Primary Educational Service Area Office 1 as a whole was at a high level. When considering each individual aspect was also at a high level too. The sequence of them were that: academic management, the general administration, budget management and personnel management. 3. The using information technology was positively associated at high level with school administration under Saraburi Primary Educational Service Area Office 1, overall, there was a significant positive correlation with the level of .01. The results of the research concluded that: the used of information technology in educational institutions is related to the administration of education. Therefore, it was important to used information technology. Which requires systematic planning of information technology in order to manage in various areas more effectiveness and efficiently.