Generally we blame the school kids for not using formal disciplinary language in school but we should admit that if we don’t teach them how to use language, how can they know about it.? It is necessary to teach the students how to talk to teachers, as in English, every expression belonging to tense or modals has certain protocol regarding mannerism , here are some expressions that students are expected to use in classroom to maintain the phenomenon of discipline in the classroom. It is duty of teachers to teach these to students instead of blaming them later.