Just because a school is large doesn’t mean it will have large classes, at least once you get to the major.
On the other hand, some small schools have large classes, depending on how you determine that.
You can go to the common data set section set section I3 to see class size and distribution. It doesn’t tell you by subject, of course, but gives you an idea.
This is U of Louisville - 17K undergrads - a lot more smaller classes than you’d think. I put MIT below that (in the black boxes). Plenty of large classes. 16.1% of their classes are 40+ vs. 15.4% at MIT - so not a true difference even though MIT’s enrollment is less than 1/4 the size.
Ultimately, budget will drive your decision - right? Who will pay?? Sometimes those kids don’t have a say in the matter - as the offers will direct you where you go.
If the student is fortunate enough to get another fly in, you might see if they might allow them to expand the trip a day - you might have to sign a waiver and ask them for housing. When I went for my MBA, UIUC flew me in - and let me know if I was unhappy, I could bail early. I was 27-28 so it was different - but I was miserable on campus, so left and drove to Indiana U (which I loved).
Point being - if they can extend somehow a day, maybe they could get to another campus as well - perhaps they could arrange transport or housing with the other campus - so like when they were at MIT, would it have been possible to get to Northeastern or BU.
Perhaps it’s not plausible - just thinking out loud.
