[[abstract]]The purpose of this research is to treat teachers’ self-efficacy of data process departments in the senior high schools in Taipei. Also, it compares the differences of self-efficacy of teachers in different backgrounds, and further analyzes the factors of self-efficacy of them. The instruments of this research are based on document analysis, questionnaires and interviews. There are 155 data processing formal teachers from 15 high schools in Taipei involved as objects of this study. The instrument of the research has been analyzed by frequency distribution, mean, standard deviation, t-test, independent samples, one-way ANOVA test, and Scheffe’s comparison. The observation and study come out the following conclusions: 1. Overall, self-efficacy of teachers in senior high schools in Taipei is above average. 2. Only school scale makes significant difference in self-efficacy of teachers among all backgrounds factors. As in different scales, “enlist teaching reform” reaches significant level to marriage status; “access learning process” reaches significant level to highest education background; “communicate to parents ” and ” change environment ” reach significant level to the experienced of teachers as well. 3. The factors that effect self-efficacy of teachers of data processing teachers are: (1) Self-efficacy of teachers of data processing teachers is multi dimensions. (2) In the aspect of self-experience,”classroom management”,”teaching execution”, “assess learning progress”, “teachers self adaption” are the factors that effect teachers the most. Also, “communicate to parents” and” change environment” will affect the result of”teaching execution” and”classroom management”. (3) The internal and external factors such as “School culture”, “work pressure”, “ qualities of students”,” teacher’s mental and physical status and satisfaction of work” and “teachers adjustment” also effect the self-efficacy of teachers.. According to the result of this research, there are five suggestions are made in order to provide reference information for education organizations, teacher development organizations, high schools administrators, and following researchers.
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