A school is the first place where you meet the true friends. With them everyone catch up with punishment, promisance and trust. But can't they last forever?

To my opinion, everyone have personal way, and all situations independent of chance to present human characters. For example, introvert has many friends and good company, school friendship would be as temporary group of people. But extravert has a couple of friends, may be it would be the first and last, because this kind of people hard find companies as soon as they can't trust everyone. 

Nevertheless, some phsyhologists consider that school friendship can't last forever if you're a bit shy and not interesting person, that's why people don't want to meet