Wow, I'm on a roll here!!!!
Your (shop? auto? Not sure which one it was) teacher, doesn't know how to talk. (And looks kinda like Mr. Rogers. My opinion.)
You can walk around behind a mop, and no one will notice you.
Even if you are the most popular kid in school.
Who would never been seen in the theatre.
Two people can be sitting next to each other, and one will randomly disappear. (Ryan and Sharpay. You can see her sitting in the auditorium, while Ms. Darbus is lecturing, but Ryan is no where to be seen.)
A bell, that you hear how many times a day, will sound like a cell phone to certain teachers.
You can get from up on the stage, to the back of the theatre in 1 ½ minutes tops, while still hiding behind the mop.
Some people are seriously bad singers.
Alan, (the boy reading off his hand) is played by a guy, who in real life is an incredibly talented singer. (Watch Read It and Weep; her older brother; same guy. Hard to believe!)
You can be not afraid, but...just...scared.