SIgh. How to answer this loaded question, with minimal negativity and nihilism...
I'll assume the question refers to all the teen years (13-19). Not just school.
13-15:
Learned that Puertorican culture is VERY different from American culture.
It is probably better for you to assimilate to places you move to.
Bullying can be seen as others method of testing you, while people who just pick on you are more likely trying to make friends with you.
Adults (even family) will not shield you from your personal and interpersonal struggles, so help yourself.
Hurting/torturing (or killing) creatures (including yourself) will teach you that building yourself and others up LIKELY makes your life more pleasant!
Being quiet, reserved, observant, reclusive, and passive can usually keep you of trouble and help you learn about others.
Teachers might take pity on you and give you passing grades (when you obviously failed), so you don't have to suffer long.
Friendships are possible, as long as you share common interests.
Video games are more a blessing, than a curse.
15-19:
Going back to your general culture brings back SOME comforts.
Teenagers are all going through strange self discovery phases, so things got weird.
Teens go through the most important precursor development years of their lives! Good leadership for this age group seemed paramount, but alas!
NOT running away (twice) might actually afford you more opportunities to make your life better.
Getting a job as a mid teen surely might be of GREAT help as you reach adult hood, but I'd have to ask those who actually did it.
Family might not be the best people, but at least they might care for you on SOME level.
Connections with the opposite sex can be dicey, so it's better to hang around those you innately relate to.
Sex may not define your capability to connect with others, but it can feel good, some times... maybe.
Men may just use you for their fleeting pleasures without desires for anything more, but for a time I wasn't so different...
Standard school isn't for everyone (Failed twice. Just didn't care anymore.). Although I got through it, eventually.
Actions (especially past) have consequences (especially mental) and they can help see the errors of your ways and get you on a better path.
Video games are more a curse, than a blessing.
There's more but you get the picture.
Conclusion: IT SUCKED! But it wasn't all bad.
I know I ended up typing this in a dissociated manner. It just felt natural to do. I tried to at least be neutral in my attitude.