Sometimes, these groupings are very harmful. At Columbine High School, two unpopular and outraged students killed fellow students because they didn't fit into the popular or athletic crowd. Some say it is students who excel in sports, clubs, or in life in general. Other popular crowds include those who are wealthy and can afford to dress in expensive clothing. Other students have a well-earned reputation for being wonderful people that others just like to be around.
Cliques determine many things.
Sometimes which parties you are invited to and excluded from. Others include the people you can associate with or that you dislike. Your clique may sadly be based on hideous facts. Some include the way you dress, act, and how you look. However, there are pros to being in cliques.