There are various sources which analyze behaviour of university and college students. Articles are generally useful for this kind of research. Remember that terms can vary from database to database. Try combining terms like students and (colleges or universities or higher education) in your searches.
Explore the Business and additional databases listed on the Consumers page of this guide. The educational database, ERIC, is particularly useful for university and college aged students. The following journals are also useful sources for this area of research:
UBC Education Library. Statistics (Education). This research guide provides links to various credible sources of post-secondary data.