BU vs. Boston College: Which Has Smaller Undergraduate Class Sizes?

The main tradeoff is that Boston College has the smaller undergraduate population and a more consistently intimate classroom feel, while Boston University offers a much larger course catalog but is more likely to place students in sizable introductory lectures. At both schools, however, large lectures are still common in high-demand introductory subjects such as economics, psychology, biology, and chemistry.

BU’s scale is most noticeable during the first year. Introductory courses can include large lecture sections, often supplemented by smaller discussion, lab, or recitation meetings led by graduate students or instructors. In popular majors, students may need to be proactive about using office hours and choosing smaller sections when registration allows.

Boston College also has larger gateway courses, particularly in the sciences and economics, but its smaller undergraduate body means students are more likely to move into modestly sized, professor-taught classes earlier. Upper-level courses at both institutions are substantially smaller than introductory lectures, especially in humanities and social-science departments; advanced science courses may retain larger enrollments when they are required for many students.

For a student whose priority is minimizing the chance of large, impersonal classes, Boston College has the clearer edge. BU can still provide small upper-level classes and close faculty relationships, but it requires more comfort navigating a bigger university and selecting courses strategically during the introductory years.