This study examines discipline problems in large classes of grade 11 students at Vila Nova Secondary School in Chimoio, Mozambique. The author conducted interviews, observations, and questionnaires to understand the causes of discipline issues and how teachers address them. Key findings include that large class sizes contribute to problems, teachers need strategies to manage individual students, and positive discipline focusing on respect and participation is most effective. The study concludes teachers would benefit from more experience and training in disciplinary techniques to improve learning environments in large classes.