Nobody wants to be lonely. Friends can become the second family for a human. Some people think that school classmates make best friends. I agree with them.
In my opinion, school friendship is really firm. Firstly, it seems to me, that friendship from childhood is the strongest one. School friends know and understand each other better. Secondly, classmates spend a great amount of time together. They meet almost everyday and do some work together: prepare homework, carry out co-projects and so on. It pulls classmates together. Thirdly, students have a lot in common and, consequently, have something to talk about. It also helps to improve loyal friendship.