Funnily enough I only had 10-person-classes when I paid $125 for summer courses in a community college between expensive uni semesters.
This matches my experience. I attended the local community college, which works closely and matches curriculum with Ohio State University. The same classes, with the same content, were taught at both schools.
The biggest difference between them is the community college offering class sizes of about 20 people, while the university equivalent was taught in a lecture hall with hundreds of students, and cost significantly more.