Most schools including Harvard have this as a rule for transfers:
“Students who have completed more than two years of college study, and those who have already earned a bachelor’s degree, are not eligible to transfer to Harvard College.”
I plan to transfer out of community college with 4 full-time semesters/two years. If I wanted to take summer math courses, would this be considered more than two years? Or would “more than two years” only apply if I took my fifth full-time semester?