This study is mainly for aimed at analyzing 1) The Effect of Certification for Teacher, 2) The Effect of Working Motivation, 3) The Effect of Certification For Teacher and Working Motivation toward the Teacher’s Performance on KKMI Limpung. The hypotesis are (1) The certification of teacher affects the teacher’s performance, (2) The working motivation affects the teacher’s performance, (3) The certification of teacher and working motivation affect the teacher’s performance. The writer used the correlational quantitative method. The population is the entire certified teachers from KKMI Limpung; the writer tested all 45 of them. The writer collected the data using the working performance questioner (α=0,916), certification for teacher (α=0,901), and working motivation (α=0,894). The writer analyzed the data using descriptive statistic, and analyzed the hypothesis using the simple regresion equality, multiple regression by using SPSS 16. Descriptively, based on the result of this study, shows that the teacher’s certification is including as a good category with average score 88.96, working motivation is including as a good category with average score 95.42, and the teacher’s performance including into a good category also with average 97.20. The result of the simple regression equality test shows: 1) The teacher certification significantly affect the teacher’s performance by 67%, 2) the working motivation significantly affect the the teacher’s performance by 24%. The result of the multiple regression test shows that the teacher’s certification and working motivation significantly affect the teacher’s performance by 78,5%.

Keywords: teacher’s certification, working motivation, teacher’s performance