Perhaps do something really emotional and deep.. like.. a group of teens on a bus, of all different stereotypes ie a 'prep', a 'goth', a 'jock' et al.. bound by the common interest of a dead mutual friend. Angst it up... need ideas? Salingers The catcher in the rye.
Oh and shh... but they love it when you do post modern things like stream of consciousness fragments and end it with 'And then he woke up'.
Remember the K.I.S.S rule, people
Keep it Simple Stupid!!!
Believe me, the english teachers can't be fucked to imagine. Don't get too much symbolic !!! From my experience, the ones in which I wrote in the most simple sentences, I got the most marks - 14/15 in fact.