Communication prototypes, communications homework help

Think back to when you were in high school and classify the
students. What categories (or person prototypes) did you use to categorize
these people? Describe in detail each prototype, including appearance and
personality characteristics. How might your communication behavior change if
you were to talk to members of each of these groups? Why do you think we
classify people into these kinds of categories? Is there any truth in any of
these stereotypes? Is this kind of activity relatively harmless, or is it
harmful at some level? What kind of stereotypes can be damaging? How can people
be encouraged to look beyond stereotypes? 

Please do this as a discussion question  around 250 words.

Thanks!