The objectives of this research are to develop and study the effectiveness of the developed instructional model based on the professional learning community process and work-based learning in enhancing classroom research competencies. The sample groups used in the research were 32 third-year students of the Bachelor of Education Program in Teaching Chinese Language and English Language Teaching, selected by purposive sampling, from students who were preparing for teaching in educational schools. The data collection tools used in the research include; 1) a pre-test and a post-test, which are the same test with 25 multiple-choice questions (4 choices each) and complete worksheets 1-9. Statistics used in data analysis included mean, standard deviation, and t-test for dependent., the results indicate that the instructional model based on the professional learning community process and work-based learning to enhance classroom research competency called the PCW Model, consists of 4 important elements: 1) principles of the model, 2) objectives of the model, 3) steps of the model, and 4) measurement and evaluation of the model. Regarding the study on the effectiveness of the model; this indicates that after using the instructional model based on the professional learning community process and work-based learning to enhance classroom research competency, the students' classroom research competency was significantly higher than before at the 0.01 level.