The Effect of Community of Practice on Students’ Confidence in English Speaking and Vocabulary Mastery (A Case Study of KOPLO Community Banda Aceh)

This research aims to find out the effects of community practice on students' confidence in English speaking and vocabulary mastery. This study uses a qualitative descriptive research design. The sample of this research was 10 of member participant of KOPLO (Warkop English Orchestra). The result showed that by joining the KOPLO community students obtain many advantages related to the improvement in vocabulary mastery and speaking confidence. Furthermore, this study also found out that there are differences between the students who are frequently and rarely participated in the meeting of community. For the students who frequently participated in the meeting obtained advantages such as students can be more confidence to speak. Otherwise, the students who rarely participated in the meeting faced lack of confidence and face difficulty in speaking. In conclusion, there are some effects in joining KOPLO community.