What are some good school topics for stand up comedy?

I'm planning on entering the talent show with stand up comedy, but the rules say it has to be school related. The show itself must be at least 15 min and max of 30 min, so its alredy going to need a lot of work. One example I already have is lunch food.

Finding your way around the first day in a new school.

Nightmares about school that come true - like wearing mismatched shoes.

What you need in your locker vs what you keep in your locker.

Since it is 15 minutes, i would pick a few topics, so i could segue between them to fill up all the time.

The Prinicpal's fat ***.... laughs guaranteed!

Compare/contrast the Prinicpal to a character. Homer Simpson? John Candy?

Jokes about another school could get your butt kicked. haha

Wow... good luck!

it should say "your mom said im hott"

home economics

watch demetri martin for inspiration that man is funny. Hes white.

dirty bathrooms, teachers bad hand writing, try not to hurt anyones feelings ... goodluck

dead babies, and you said this will be going on during lunch? even funnier! : /

farting in class
cheating
tardies
locker trouble
tripping ppl
switching names when a substitute is in

you can do like a whole 10 minute rant about p.e teachers.
how they try to act all tough..
also make up some funny **** about the teachers lounge, say you broke in and saw all kinds of weird ****

wood shop teachers, no matter what school in any city the shop teacher is always missing at least one finger.

Lunch food is a great one! Don't forget the social classes of high school - the jocks, nerds, heads, and whatever new social classes have emerged nowadays. You can also poke fun at the football team as long as it's good-natured. There's the school newspaper, teachers and principals (sort of like a celebrity roast), the prom or other formal dances, buses (all yellow, what's up with that?!), school mascot. The list is practically endless...

Dont forget about the lunch lady and her "bat wing arms" you know how they all have those flabby things under their arms.

Showers after gym is always a laugh a minute.

when i was is school, substitute teachers were always a joke :)

you can use hall passes, how early it starts, the different cliques in school, your sports teams anything like that what i think works best is you just find a single topic and just let it snowball from there. when you get one good idea, just follow that to more good ideas

try something like why does school food always taste the same... we have raviolli's and tacos and they taste exactly the same. then say how imagine if school subjects were like that.

Stuff that's funny:
- substitute teachers and their inability to control a classroom ( " This one sub, I swear, she didn't know how to pronounce ANYONE'S name. She was like, "M... M... Mar... Mir... Mary? Mary.... J-Joen-Jibb-Johnson?" REALLY exagerrate here too)
- heaviness of backpacks (you can really pull some great exaggeration here: " My backpack is so heavy I'm starting to lean backwards, by the end of the year I'll be able to give myself a rectal exam" ---> raunchy but I think it'll fly over well)
- difficulty of homework ("I have to have an astrophysicist, a biochemist and neurosurgeon on speed dial!")
- strictness of teachers ( "Mr. Gomez is so tough on us, it's like he's training Navy Seals or something. I came in just as the bell was ringing and he goes, "You! Drop and give me twenty!" [sight gag, drop to the ground, struggle with your pocket and then pull out your wallet] " Can you break change for a fifty?" No, but seriously, Gomez is so tough though. After I did those twenty push-ups he ....")

people sleeping in class and you get in trouble for trying to wake them up WHILE THEIR SNORING! farting in class. i got to use the bathroom because___(something stupid) can i go... yes! things not to ask a teacher. what happens when a teacher turns around; party! get a bunch of guys to pull your backpack on stage, and pull but dont move it at all, like its to hevy.then say o yeah i dont have math homework take the math book out and put on the backpack then trow it in a corner or some thing

How about gym class? It's not dull subject matter to most people and therefore, it could possibly earn some laughs.