@tk21769, I have no opinion about U Chicago as a match for this student but I’d caution you to be careful of the % of small classes statistic. What can be more telling is the number of large classes and how many students there are in each. For instance, Business Insider did a story on a couple of the largest classes at Harvard. One had 818 students, another had 711. So even though 45% of Harvard’s classes have 2-9 students and 28% have 10-20, in the fall semester almost a quarter of all students were in one of only two classes, and those two classes were enormous.
http://www.businessinsider.com/most-popular-course-at-harvard-2014-9
To put it in another way, if a school has 100 classes with 6 students and 2 classes with 600 an individual student is twice as likely to be in a mega-class as they are to be in a micro-class.
That’s not to say there’s anything inherently wrong with some large classes, just that you have to be careful about how you read this particular stat.