* Accelerate their degree: Graduating early or taking fewer courses per semester during the regular academic year.
* Catch up on coursework: If they failed a course or need to improve their GPA.
* Explore a new subject: Without committing to a full-year course.
* Fulfill prerequisites: For future courses.
While some programs *might* recommend or suggest summer courses for certain majors or tracks, they are almost never required unless explicitly stated by the program or university.