Abstract:
This study aimed to: 1) investigate the nature of internal supervision practices in schools, 2) assess the effectiveness of teacher performance, and 3) explore the relationship between internal supervision and teacher performance effectiveness. The sample comprised 333 school administrators and teachers under the jurisdiction of the Chiang Rai Primary Educational Service Area Office 3. The research instrument utilized was a structured questionnaire based on a five-point Likert scale, exhibiting a reliability coefficient of 0.986. Data analysis involved the use of descriptive statistics, including frequency, percentage, mean, and standard deviation, as well as inferential statistics through Pearsons correlation coefficient. The findings revealed that: 1) Internal supervision practices were perceived overall at a high level. Specifically, the domain of supervision planning attained the highest mean score, followed by the implementation of internal supervision, whereas the domain concerning the surveying and analysis of current conditions, problems, and needs registered the lowest mean score. 2) Teacher performance effectiveness was similarly evaluated at a high level. Among the dimensions assessed, instructional planning and design yielded the highest mean score, followed by the setting of student quality objectives, the use of instructional media and technology, and individualized student analysis, respectively. The domain of assessment and evaluation demonstrated the lowest mean score. 3) A statistically significant positive correlation at the 0.01 level was identified between internal supervision and teacher performance effectiveness, both in overall terms and across all specific dimensions