732 JMKSP (Jurnal Manajemen, Kepemimpinan, dan Supervisi Pendidikan) Volume 7 Issue 2 (2022) Page 732-738 ISSN 2614-8021 (Online) 2548-7094 (Print) The Effects of Principal’s Competence and School’s Culture on Student’s Character Development Sumargiono 1 , Yasir Arafat 2 , Andi Rahman 2 1 SDN 16 Air Kumbang, Banyuasin, 2 Universitas PGRI Palembang Corresponding Author E-mail: sumargiono1979@gmail.com Received 30 August 2022; Revised 23 October 2022; Accepted 31 October 2022 Abstract: This study focuses on the impact of the principal's competence and school’s culture on student’s character development partially and simultaneously. This study uses quantitative methodologies. The academic community of State Elementary Schools in Air Kumbang District, Banyuasin Regency, is the population of this study. A sample of 123 third-grade kids is drawn to reflect the research data. We employ the entire population as a purposive sample. Questionnaires, observations, and documentation were used to collect data. The study hypotheses were evaluated and assessed utilizing basic and multiple linear regression tests to examine the data. The result showed that the principal's competence and school’s culture both impact the student's character development. Keyword: Character Development, Principal’s Competence, School’s Culture 1. Introduction The issue in this study is that the character development of the students at Air Kumbang Banyuasin State Elementary School is still lacking. This is evident from observations of students with negative personalities, such as students who do not care about cleanliness in the school’s environment, students who are rude to older people, and students who fight and make fun of friends with words. impolite words, being too lazy to study and complete the assignments assigned by the teacher, there are those who joke too much, secretly cutting their friends' notebooks into four small pieces, hiding their friends' shoes, some are too lazy to