The performance of Guidance and Counseling (GC) teachers is essential for delivering effective counseling services and supporting students' academic, personal, social, and career development. This study aimed to examine the effects of Personal Value, interpersonal communication, and academic supervision on the performance of Guidance and Counseling teachers at public junior high schools in South Tangerang City, Indonesia. A quantitative approach with an explanatory survey design was employed. Data were collected from Guidance and Counseling teachers using a five-point Likert-scale questionnaire and analyzed through multiple linear regression with IBM SPSS Statistics. The results indicated that Personal Value, interpersonal communication, and academic supervision simultaneously had a significant effect on teacher performance (F = 95.679, p < 0.001), with a coefficient of determination (R²) of 0.744, indicating that the three variables explained 74.4% of the variance in teacher performance. Partially, only academic supervision had a positive and significant effect, whereas Personal Value and interpersonal communication were not significant predictors. These findings highlight the importance of strengthening continuous and collaborative academic supervision to improve the professional performance of Guidance and Counseling teachers.
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