It is all of the above plus for some students their secondary school success required their parents and teachers looking over their shoulder and pushing them to do the work. That is lacking in college. They did not learn time management. Some go off the deep end partying. Some colleges even give out F’s if a student fails the class!!! That rarely happens in many high schools where everyone is above average. (Garrison Keillor)
When someone is accepted to a college with stats in the bottom 25% of accepted students they are overjoyed here on CC. I wonder how they do at that college.