Abstract: A Grand Design Model of Teacher Professional Education Based on Teacher's Perfor­mace Determinant. One of the crucial factors that determines the quality of education is teachers. Thus, developing teachers' professionalism in carrying out their work is essential. This study aims at developing a grand design model of teacher professional education based on determinant factors of teachers' performance. It is a research and development study (R&D), in which data were collected through questionnaires, observations, and interviews, and analyzed using descriptive statistics, correla­tion analysis, and qualitative data analysis. The sample consists of 90 teachers and 28 headmasters selected using quota random sampling. The findings of the study show that the effective model of teacher pro­fessional education is the one conducted through five steps, namely, needs analysis, development of training and supervision programs, implementation of the programs, evaluation of the programs, and follow-ups of the programs. The development of the programs requires coordination among related in­stitutions. The implementation needs to refer to the right principles, approach, and training techniques and be supported by good facilities, media, trainers, and training places. Keywords: training model, teachers' professionalism, teachers' performance Abstrak: Grand Design Model Pembinaan Profesional Guru Berbasis Determinan Kinerja Guru. Salah satu faktor yang sangat menentukan mutu pendidikan adalah guru. Untuk itu diperlukan pening­katan profesionalisme guru dalam melaksanakan tugas. Penelitian ini bertujuan mengembangkan grand design model pembinaan profesional guru yang efektif berbasis faktor-faktor determinan kinerja guru. Penelitian menggunakan desain penelitian pengembangan. Sampel diambil sebesar 90 guru dan 28 kepala sekolah dengan quota random sampling. Data dikumpulan data kuesioner, observasi, dan wawancara. Hasil pengumpulan data dianalisis dengan statistik deskriptif, analisis korelasi, dan analisis data kualitatif. Hasil penelitian menunjukkan bahwa model pembinaan guru yang efektif dilakukan melalui lima tahap, yaitu analisis kebutuhan, penyusunan program pembinaan, implementasi program pembinaan, evaluasi program pembinaan, dan tindak lanjut hasil pembinaan. Dalam penyusunan program perlu koordinasi antarlembaga terkait, dan implementasinya perlu mengacu kepada prinsip, pendekatan, dan teknik pembinaan yang tepat, serta didukung oleh fasilitas, media, pembina, dan tempat pembinaan yang baik. Kata kunci: model pembinaan, profesionalisme guru, kinerja guru