Answer:
If we are talking about their personality (if it is 3 examples of learning style it could be visual, auditory and kinesthetic learning), we could list more than 10 types. Let´s pick 3 of those and give examples of its stereotypical characteristics:
The Attention Seeker, which is the student that requires both class and teachers' attention. They are the ones who always have a question, seek teacher much more than the average after class, talk loudly in the classroom, tries to make sure that everyone is paying attention to him.
The Overachiever, the student usually known as the nerd, the one in a lot of school clubs at the same time, spending a lot of time in the library or with books, striving for an A always (anything less would be seen as failure).
The Slacker, the student opposite to the overachiever. Tends to sit in the back of the class, is always underprepared for tests, don´t do homework, skip a lot of classes or is always late, sometimes is rude and uncivil in the school environment.