Management strategies of school principles in developing teachers' professional competency to improve the quality of education in SMK Kesehatan Darus Salam Lhokseumawe Aceh

The purpose of this study is to determine the professional development strategy of teachers in SMK Kesehatan Darussalam, namely: (1). Principal's leadership strategy (2). Obstacles in developing professional competence (3). Model of teacher professional competence development. Methods This research uses a descriptive qualitative approach. Data collection techniques through interviews, observation, and documentation. Data analysis techniques include data reduction, data presentation and drawing conclusions. The validity of the data was carried out with the participation of researchers, triangulation techniques using various sources. The informants are the principal, vice principal of the curriculum and teachers. The results of the study are: (1). The principal's leadership strategy in developing the professional competence of teachers to improve the quality of education (2). Obstacles faced in developing professional competence of teachers such as limited IT mastery, limited time, lack of creativity in learning, still lack of references to reading books, minus scientific works made by teachers (3). The model that can be used to improve the professionalism of teachers in carrying out their duties is through in-service training or in-service training programs.