You've got to make sure that you don't overstep your boundaries with teachers, especially when it's report card day or when you're about to take a test.
You have to make sure there's a lock on your phone because people can hack into your Twitter so fast.
First day of school, make sure that you know your locker combination.
I hid the homework, stayed in the bathroom for the longest time trying to cut class - I was a wreck as a kid.