Clique, Cliques (noun): A group of people with common interests that do not allow the further entry of people into that special group. These people most likely ostracise the people out of the clique and thus think the group is exclusive. 

Having being guilty of being part of a clique in some point of my school life, I would say that I do not object to the existence of cliques in my class - it is perfectly normal and common. A class without any segregation of cliques is... Beyond imagination. But, the thing is, having not being in a so-called clique in my class makes me feel uncomfortable... and distant.

I think i can cope with it.

I think.

But then the segregation between the "C" and "E" people are pretty obvious... and "irritable". Not that there is discrimination/ostracising among the "C" and "E" people, it's just that it shouldn't have been this way...