In any school, who decides which students are cool or popular and which students are outcasts?

In school there isn't really a way to tell if a kid should be popular,cool,or an outcast it just happens on the way you dress,the people you hangout with and the people that talk to you.That is how school works every school has there own group of popular kids.The thing i know about popular kids is that they like to make fun of people who don't even do anything to them they just do it to make fun of someone or just to impress their friends on how funny or bad they are popular kids get invited to a lot of parties and everybody knows them around the whole school that is what popular for me is what about.An outcast is someone who doesn't talk to people or they are nerds and nobody likes them,everybody knows what outcasts are they don't have friends they are not cool or they only have friends who are outcasts too. Popluar kids like making fun of people who are outcasts because they know if they make fun of them they wont say or do anything to make them stop making fun because people who are outcasts are shy or don't have the guts to go up to one of them and tell them to leave them alone.I think that nobody chooses whether you are popular or if you are an outcast i think people choose that way of going to school with the name “he is popular” or “he is a outcast “ maybe that is the what they want to spend their school years with.