College Summer Programs

I attended a summer program at a college twice during high school, but received no credit for the classes I took. Where would I put this in common app? Could I put it under the Education section on the colleges/university tab since there is an option for summer programs? Or would I have to put it under activities because I technically didn’t receive credit for the classes I took?

My D put hers under “Activities”.

I think I’m going to go ahead and put it under activities. Thanks!