It depends on your definition of huge. Berkeley is a graduate school masquerading as an undergraduate school. When I went, the undergraduate population was r

It depends on your definition of huge. Berkeley is a graduate school masquerading as an undergraduate school. When I went, the undergraduate population was roughly 10k whereas the graduate population was roughly 20k. The undergraduate school is factors smaller than the largest undergraduate schools. EDIT: Largest undergraduate schools are around 60k! Even UofT Austin is around 40k. https://www.usnews.com/education/best-colleges/the-short-list-college/articles/colleges-with-the-most-undergraduates https://www.usnews.com/education/best-colleges/the-short-lis... EDIT2: The prestige comes from 1) famous grads 2) the professors who are supported by the graduate students. The undergrads gain from the reflected prestige.