The purpose of this study is to identify and develop a rubric for assessing the practice test in national technical qualification with validity and objectivity. There are three specific purposes for this study. First. we suggest some issues to consider when we develop a rubric. Second, we suggest the general procedure and main factors in developing a rubric. Third, we identify some problems and suggest some improvement measures for the rubric in national technical qualification examination. The procedure for developing a rubric is as follows; decisions of task, the relation with goal, classify of performance level, and validity. Also, there are five main factors as follows; contents, criteria, practicality, credibility, and objectivity.