This document outlines a study on social interaction in English language classrooms in three high schools in Bandung, Indonesia. The study observed 50 students in a "good" school, 40 students in a "middle" school, and 35 students in a "low" school over 10 weeks. Questionnaires and interviews were also conducted. The results found that the "low" school had the most active student participation and social interaction, while the "good" school had the least. The document concludes that applying a competency-based curriculum in Indonesia could help create a livelier and more interactive learning environment.