I am going to make up two sentences below.
(1) He will take a few accounting courses in college next year.
(2) He will take a few accounting courses
at a college next year.
I've heard from some people that if you say "in college" in (1), you are referring to the type of training you want. On the other hand, if you say "at a college" in (2), you are talking about the institution itself. What they say makes sense to me. Are they right about this? Please give me your opinion. Thanks a lot.