Parents are usually supportive or demanding, helping to ensure completion of studies and providing security. Friendships have developed, perhaps since grade school, which help satisfy social and interpersonal needs. Time management in high school is often easier than in college. Students usually have more time for activities outside of class, less homework. Students may have breaks between classes of one or more hours, or may even choose to take night classes.
Colleges are big places with many buildings spread out over acres of land.
It is sometimes tough to get to the next class with only a few minutes in between. Instructors and teaching styles are amazingly variable. Low personal attention is provided by faculty. Instructors may be old, young, male, female, graduate student, foreign, excellent or very challenging. There are many, many grading systems and it is sometimes difficult to know how to prepare for exams and assignments.