Don't date or make friend with really shallow people, that could potentially hurt you.
Befriend the nerds.
Wear a bra.
Don't smoke.
Don't be the kid without the cellphone, but also don't be the kid that's got the newest cellphone, that's a total tool bag. (omg, I agreed with this one.)
It's OK to bring your lunch sometimes because let's get real, school lunch sucks.
Remember to study.
Don't get pregnant.
After you graduate, everyone will be weird. Get the f**k out of there.
