Abstract The purpose of this study is to evaluate the career ladder system which was design by professor 蔡培村 (1994), and to estimate its effect on elementary school teachers. This study adopted the documentary analysis. The first part examined the eight basic assumptions of the career ladder system which suggested by AACTE (American Association of Colleges for Teacher Education) for secondary and elementary school teachers. The second part analyzed the statistics of Educational Ministry of the ROC and the essays written by professor's and scholars in the past decade. According to the analysis results, the author proposed seven criteria of teachers' professional quality. Finally, the author utilized the seven criteria to test the efficiency and operational feasibility of the system designed by Chia. The conclusion are as follows: 1)The framework of 蔡培村 's system matches six of the eight basic assumptions. 2) 蔡培村 's system can perfectly promote three of the seven criteria, can partially promote three of them, and cannot help the other one.