<![CDATA[This study was to determine the effect of teachers' perceptions of principal supervision on teacher performance at UPT Pendidikan Kec. Arjasa who implements the Semester Credit System in Sumenep Regency. to determine the effect of teacher motivation on teacher performance at UPT Pendidikan Kec. Arjasa who implements the Semester Credit System in Sumenep Regency. to determine the effect of teachers' perceptions of principal supervision and teacher motivation simultaneously on teacher performance at UPT Pendidikan Kec. Arjasa who implements the Semester Credit System in Sumenep Regency. To take a predetermined sample from the population, a sampling technique is used, which in this case will be applied based on a percentage of 50% of the population, namely 50/100 x 106 = 53 teachers with proportional sampling technique based on the number of fields of study in the institution concerned. with the data collection method used in this study is the instrument formed a questionnaire (questionnaire) and observation Teachers who have a good perception of the principal's supervision will teach well, because supervision means coaching teachers towards improvements in teaching. On the other hand, if the advice from the supervisor is ignored by the teacher, it can have an impact on teaching activities that are not good. This is related to the encouragement/motivation by the principal to improve teacher performance. the influence of teachers' perceptions of principal supervision and teacher motivation on teacher performance at UPT Pendidikan Kec. Arjasa who implements the Semester Credit System in Sumenep Regency. The principal plays a very important role in creating the spirit and motivation of teachers in carrying out their duties. Successful principals must have the ability to encourage the emergence of a strong will and confidence in teachers and staff in carrying out their respective duties for the progress of the school in achieving its goals]]>
