This study aims to determine whether direct and indirect effects of organizational culture, principal leadership, and motivation on teacher performance at Madrasah Aliyah Irsyadul Islamiyah. The type of research used is a quantitative research using multiple linear regression formulas and flow analysis as its development. This study found that: 1) there was a significant influence between teacher motivation and teacher performance of 0.570. The contribution given by teacher motivation to teacher performance is 31.2%; 2) The influence of organizational culture and principal's leadership on teacher performance is 0.642. The contribution given by the head of madrasa communication to teacher performance is 41.2%; 3) Teacher motivation, organizational culture, and principal leadership together on teacher performance have a strong relationship of 0.737. The contribution of the two independent variables to the teacher's performance at Madrasah Aliyah Irsyadul Islamiyah was 54.3%, while the remaining 45.7% was the contribution of other variables not measured in this study.

To overcome the problem of education quality, the government issued a zoning system policy on New Student Admissions. This study aims to described the implementation of zoning system policies and constraints faced in implemented the new student admission zoning system policy at the junior high school level in Langkat District. This study used a qualitative approach with a case study method. The subjects of this study were the Middle School Curriculum Head, Middle School Curriculum Staff, Head of Elementary Education, Deputy Head of Student Affairs, Deputy Principal The technique of collecting data used observation, interviews, and documentation. The results of the study are as follows: (1) The implementation of the zoning system in the PPDB at the junior high school level in Langkat District has been carried out for two years aimed at equitable distribution of quality education in schools in the Langkat Regency, so far the implementation of the zoning system in Langkat has been effective because the potential of students begins to be evenly distributed in the Langkat Regency. (2) The constraints faced in the implementation of the zoning system are the lack of understanding of the zoning of the socialization of the zoning system because of the different backgrounds of parental   education. Efforts are made to overcome these obstacles, namely  to disseminate the zoning system early as clearly as possible.