Abstract: This study focused on the issue of mentors’ performance after participating in competency improvement training. To examine the influence of competency based training thoroughly, we employed a qualitative research approach, specifically using the descriptive and case study methods whereas the main data collection techniques used entailed in-depth interviews, observations, and document studies. Research respondents were mentors who had completed various trainings especially citizenship content based training, and also the heads of non-formal education centers (SKBs) from a few selected areas of the West Java Province. The results revealed that competency improvement training(s) of mentors have been conducted in accordance with the existing theories on training, hence contributing to improvement in the areas of planning,work performance, and learner assessment. Keywords: Tutor, Training, Performance, Non-formal Education Instructor, and Instructor Competency