Not less than 200. If it is a public classroom, the classroom should be large enough to accommodate no less than 200 students. If it is not a public classroom, it can accommodate 50 people. In general university classrooms, large classrooms are stepped classrooms, which can accommodate about 200 to 260 people, and small classrooms can generally accommodate about 60 to 100 people. Universities are institutions of higher education that provide teaching and research.