The purpose of this study was to investigate the effect of motivation by presenting behavioral objectives and evaluation criteria on skill performance and the variables related to shop teaching at the technical high school. The method of the study was devided into two different approaches, the one was a experimental research which tested the significant differences of the student skill achievement scores between a controlled group and three experimental groups being motivated by the objectives and evaluation criteria. The other method was questionnaire survey conducted on the technical subject teachers at the 21 technical high schools selected by stratified cluster sampling method. Independent variables of questionnaire were consisted of factors selected from the properties of teacher, student, shop and school. Dependent variables were shop teaching competency degree and school shop management competency degree of technical teacher. After data screening, 617 data were analyzed by one way analysis of variance, Scheffe`s F, x²test. Followings are four main findings of the study. Firstly, behavioral objective was not significantly powerful as a motivation method. However, the expermental group being motivated by evaluation criteria scored significantly higher than controlled group. Secondly, the variables affecting the competency level of shop teaching were, teaching career, industry experience, educational background, job satisfaction, student entry behavior, student interest on practice class, age of school shop, status of shop equipments and tools, amount of materials, lighting, ventilation, heating, types of school foundation, type of technical high school, principal`s attitude toward the practice. Thirdly, the variables affecting the performance level of shop organization and management were age, industry experience, student entry behavior, student interest on practice class, status of shop equipments and tools, amount of equipments and tools, lighting, ventilation, heating, types of school foundation, type of technical high school, principal`s attitude toward the practice. Lastly, the Korean technical teachers were using the teacher centred shop teaching methods such as four step teaching and lecture without regard to courses and grades of students. Students were motivated by extrinsic motivation method such as evaluation criteria than intrinsic one such as objective perception. During practice class the student had been tried to lessen the stress occured by evaluation criteria. The technical teachers were more significantly affected by student properties than their own properties. Based on the findings, followings are recommended. The technical subject teachers should develop the specified evaluation criteria according to each job sheets and motivate students presenting the evaluation criteria at the introduction step of practice class. The administrators should keep their teachers have job satisfaction and practice facilities under the best condition. The teacher should use student centred teaching method such as project method and problem solving method at upper grades.