Perpetual student

Also known as professional student, a perpetual student is a college or university attendee who re-enrolls for several years, typically more than what is necessary to obtain a given degree. Reasons for such behavior include time constraints (inability to devote full-time to studies), indecision (changing one's major one or more times), or simply the pursuit of more than one degree. Oftentimes, there is no goal of either degree or major. This term can have either a positive or negative connotation, depending on the person and circumstances.