Pro:
-Good chances of making friends above any other random encounters. You eventually end up making friends even if you don't want to.
-You are given education for either free, or a small price.
-You basically have a daily exercise routine of walking to and inside the school.
-Feel better about yourself in regard to accomplishments, be it a grade or a smirk from a teacher.
-You have a chance of excellence and rewards in certain circumstances.
-Opens gates to a wider variety of jobs you can spend your whole life on. (Better chances of getting hired at McDonalds)
Cons:
-Enforced on a educational ideology that is ensured to dissatisfy you and teach you useless things for a daily life.
-Enforced on labor for classes you have physically no interest in.
-If you are simply not good at something but try your best, there is no reward for that, a fail is and will remain a fail during your school life and you will have a pain in classes you are simply not good at.
-There is a high chance that there is a number of nagging teachers that give an impression of a warden.
-Homework is in most cases not optional. Homework is meant to recap the work done in class so you can remember and perform better - if you consider you already know how to do things, and feel prepared for a test, you will still be punished for not doing homework, same case if you did not know how to do the homework.
-"You will need this information in life."
-Most schools do not allow custom routines for literature, you are enforced to read books you don't want anything to do with. I do not mind reading books - that I like. In the past 3 years I have not read one book at school that got me really interested in it.
-Medical staff is a joke in most cases, same as for guarding. In many cases, you should not have a sense of security within the school borders or even outside of them.
-Just like you can make friends, you can make enemies, very easily, and in every school unless it's a private one there will be someone who just wants to ruin everyone's wellbeing and he is NOT getting expelled. We have entire classes like that.
-Exams are basically a paper that decides your future. You fail, you fail in life (in most cases). You succeed, you may still fail in life (in most cases).
-Unless you have a school with lockers, securing belongings is a trash. There are a huge amount of instances where certain of my things were "missing" and I am not the only one in my class.