Mathematics Teacher Professionalism Development Through CPD Car in Junior High School In City of Semarang Indonesia

The main problem of this research are (1) how to make an effective management model of training and mentoring CPD CAR that can improve teachers's professionalism in a sense can improve the performance of mathematics teachers in Junior High School in City of Semarang?; (2) how is the possitive impacts of management model of training and menotirng CPD CAR against the result of studying of students in Junior High School in City of Semarang ?. This research's method is R and D (Research and Development)with experiment's research ?pretest-posttest with control group design?. Population used in this research is mathematics teachers in Junior High School in City of Semarang that have been certified. Sample is taken by sampling random technique by paying attention the school's status SSN, RSBI, and RSSN. The datas from teachers are taken by questionnaire method, test method, focused observation sheets, and interview guide supported by assessment form validator experts, practitioners, supervisors, monitors the FGD. Analysis of the data with descriptive statistical analysis, ANOVA and t-test with SPSS 16.0 and CFA SEM with LISREL 8.8. Research's results; (1) CPD CAR training model effectively can improve the mathematics teachers's professionalism in Junior High School in a sense can improve the performance, knowledge, understanding, and skill of the teachers about CAR that supports their professionalism; (2) CPD CAR training model has possitive impact in improving the result of studying of Junior High School's students because this training do management steps in training plan model function, function of the training and assessment functions mature training program. When in Indonesia applied the results of this study are continuously implemented CPD CAR training model the next will allow can improve the professionalism of teachers that affect to improve students' learning outcome.