How do UCLA and Rice compare in class size for undergraduates?

Rice offers the smaller-class undergraduate experience by a clear margin. It enrolls far fewer undergraduates than UCLA, and that shows up quickly in day-to-day academics: discussion-based classes are more common, introductory courses are less likely to feel anonymous, and direct interaction with professors tends to be easier to get. UCLA can absolutely provide strong teaching and access, but the scale of the university means large lectures are a much more normal part of the first two years.

At UCLA, many lower-division classes in subjects like biology, chemistry, economics, math, psychology, and political science can be quite large, especially for popular majors and prerequisite sequences. Those courses are often paired with smaller discussion or lab sections led by TAs, so your actual week may include both a big lecture hall and a smaller breakout setting. In practice, that means professor access is available, but you often have to be more intentional about office hours and building relationships.

Rice is much more likely to give you smaller sections earlier, including in introductory classes outside the very biggest STEM sequences. The university’s residential college system also makes the campus feel smaller academically and socially, which can make it easier to know faculty and be known by them. Even when a class is not tiny, the overall environment tends to make student-professor contact feel more routine rather than something you have to chase.

For your specific concern about the first couple of years, UCLA’s default experience is more likely to include several large lectures, while Rice’s default is more likely to feel seminar-sized or at least modest in scale. If close classroom interaction is one of your top priorities, Rice has the more consistent advantage.