The research aims to: 1) Investigate the results of supervision of teaching and learning managements by educational institution administrators under the jurisdiction of Phitsanulok Primary Educational Service Area Office 2. This is a survey research. The samples in the study include: 1) 97 educational institution administrators under the jurisdiction of Phitsanulok Primary Educational Service Area Office 2, 2) 97 teachers under the jurisdiction of Phitsanulok Primary Educational Service Area Office 2. These participants were selected using simple random method, totaling 194 people. The tools used in this research are: 1) a Document analysis form, and 2) a Questionnaire concerning the supervision of teaching and learning managements of schools under the jurisdiction of Phitsanulok Primary Educational Service Area Office 2. Data was analyzed qualitatively using content analysis and presented in a descriptive analysis format. The results of the study found that: The supervision of teaching and learning managements by educational institution administrators under the jurisdiction of Phitsanulok Primary Educational Service Area Office 2 is generally at the highest level. When considering specific issues, it was found that: in terms of blended learning, the administrators have supported the learning process through online electronic media; in terms of collaborative lesson development, the administrators have identified lesson development issues from classroom problems; and in terms of teaching tasks and mentoring system, the administrators have fostered relationships with teachers in managing teaching and learning teaching and learning managements.