Efficiency improvement of teacher performance in learning through periodical collaborative educative supervision at Girsip Senior High School 1
The vision of education leads to improving the quality of education that will ultimately improve student learning outcomes. The quality of education has certainly been influenced by many components. This research is aimed to examine the effectiveness of headmaster supervision towards the teacher performance at Girsip State High School 1, Simalungun and the influence of supervision itself towards the teacher performance. This research is the "ex post facto research, its subject is the teacher of Girsip Simalungun District State High School 1, with the total number of 31 people. The collecting data technique used the questionnaire and the descriptive and quantitative data analysis. Furthermore, the presentation of data uses a tabulation technique or percentage of answers from all respondents. The result of this study has shown: (1) the implementation of school principal supervision includes preparation, methods and instruments, determination of evaluation procedures and application of follow-up evaluation results, which are in the "good" category in cycle I and in the "very good" category in cycle II. (2) the teacher performance which includes the preparation of lesson plans, learning processes, evaluating learning outcomes, and evaluating learning accuracy are in the "good" category in cycle I and in the "very good" category in cycle II. (3) the implementation of supervision of school principals contributed the average efficiency on teacher performance by 85.44% in cycle I and 95.63% in cycle II.
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