In the US: * Changing majors * Transferring from a community college to a university * Failing or withdrawing from courses, especially ones not offered every

In the US: * Changing majors * Transferring from a community college to a university * Failing or withdrawing from courses, especially ones not offered every semester * Trying to balance coursework with a work schedule or childcare Can all delay you a year or two, perhaps more in combination. I observed a complete paradigm shift between: * The students who went straight from high school and into college; Lived in dorms, high representation in humanities programs, who were showing up to the 13th/14th grade with no real responsibilities and enough money to do as they like & find a thing they were interested in. They had a wide variety of grades (many failed, some did very well), but usually a relaxed attitude about risks and leisure time. * The commuters, "nontraditional" students, & community college students/transfers, for whom many of the above were frequently true, and who were usually career-oriented. They tended to struggle for the B grade. * The STEM upperclassmen & grad students, who had successfully defeated or overcome these hazards by becoming workaholics who dropped everything else in their life to finish in 4 years with high marks & internships. They rarely retained any social life, and were often academia-oriented.