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:
The Public Opinion box on the Consumers page provides links to some key sources of polling and public opinion. Try searching for students. Below are some more specialized sources: