Surely you can get a 3 page paper on how long it takes to get those nitros running?? (jk

)
Good to spend time outdoors
Work out for the mind fixing mechanical issues - teaches an amount of logic and how to work through issues.
Can be good to spend time with family or friends
Always a good laugh seeing your truck 50 foot up in the air lol.
But most importantly (from a schools point of view!) it keeps you away from drugs/alcohol/criminal rave activity. I mean lets face it after all the cash you NEED for upgrades and fixes whats left for anything else lol!!
Good choice of topic for the essay by the way, id be interested to know how it goes and what part of the subject you pick up on to write about.
EDIT:
I just though couldnt you just use the addicted to RC post? Give the teachers a good laugh by picking 3 pages of highlights

. also you should go add to it - 'you know your an addict when you write school papers on rc...' hehe