Abstrak
<p><em>This study aims to: (1) describe the role MGMP in improving the professionalism of English teachers; (2) know the model increase the professionalism of English teachers in MGMP; (3) know the effectiveness of the development strategy of the professionalism of English teachers in MGMP. The design of this study was qualitative research. The collection of the data was done through interview. Findings show that: (1) Implementation of the program MGMP is by planning, implementing and evaluating program; (2) Strategy in improving the professionalism of English teachers in the MGMP is by training, non-training, certification program and educating supervise program; (3) The development model of the professionalism of English teachers is effective to improve the professionalism of English teachers by four domains, namely: the realm of the needs of teachers, sphere of activity in the MGMP, the realm of evaluation and feedback, and the realm of the increase in the professionalism of teachers</em><em></em></p>