The research based on the phenomenon that indicates Madrasah Tsanawiyah’s teachers in Samarinda has a good performance when their headmaster lead them effectively and supervision of functional agencies. The purpose of this research are: (a) to describe the quality of the leadership of headmasters of Madrasah Tsanawiyah, (b) to describe the quality of educational supervision of Madrasah Tsanawiyah, (c) to describe the quality of the teachers performance of Madrasah Tsanawiyah, (d) to find out the influence of headmasters’ leadership on the teachers performance of Madrasah Tsanawiyah partially, (e) to find out the influence of education supervision on the teachers performance of Madrasah Tsanawiyah partially, and (f) to find out the influence of headmasters’ leadership and education supervision on the teachers performance of Madrasah Tsanawiyah in Samarinda simultaneously. The entire study population Madrasah Tsanawiyah teachers of Samarinda amount 629 people, while the sample are 76 teachers applied multi - stage sampling technique. Determination of madrasah through purposive sampling technique, whereas the selection of respondents conducted through random sampling technique. Data collection used questionnaire techniques, while the data analysis techniques used Multiple Linier Regression Analysis. The result of this research concluded as follows. The headmasters’ leadership based teachers’ assessment are categorized as good (μ= 4,09), while the implementation of education supervision are in good category (μ = 3,92), and the teachers’ performance are in good category (μ = 4,01). Partial leadership has a strong influence on the teachers’ performance of Madrasah Tsanawiyah (r= 0.73). The headmasters’ leadership contributed 54.6 % to the effect for improving the quality of teachers performance. Partial implementation of educational supervision has a strong influence on the teacher performance of Madrasah Tsanawiyah (r = 0.72). Implementation of educational supervision contributed 53% to the effect for improving the quality of teacher performance. Headmasters’ leadership and implementation of educational supervision simultaneously have a strong influence on the teachers performance of Madrasah Tsanawiyah (r = 0.74). Headmasters’ leadership and implementation of educational supervision contributied 56.1 % for improving the quality of teacher performance.
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