I have some advice, don't do the f-ed up capitalization thing. It hurts my head when I read it. I mEaN, hOw Is ThIs NoT hArD tO rEaD aNd TyPe? Have I been a big enough jerk yet? Probably, so here's my advice: nope. I think fiction and poetry are two way different things. Very different, which is why Twilight and Harry Potter can work, and something that you guys are shooting for, which sounds along the lines of those two, probably wouldn't. When I was a teenager, I read some great poets, Eliot, Bukowski, Ginsberg, and not one of them had a life I could relate to, yet for some reason their poetry struck such a cataclysmic nerve with me. It's not because they wrote about their parents not letting them stay out past midnight or the pretty girl in algebra class, but about loneliness, insanity, hatred, these large arching themes that came through so fluidly in their poetry even though the poems were about things I never experienced. Bukowski wrote a shit load of poems about being penniless and traveling across America doing odd jobs and drinking, something I wouldn't know a thing about or be able to survive doing, yet I could feel the loneliness, the sense of abandonment, the freeing nature of it. That kind of writing got me interested in poetry, and if I read something geared towards highschoolers, I would probably despise it on sight because I would feel talked down to. If you want to get teens interested in poetry, have them read Bukowski instead of the sickeningly overrated poetry that's assigned in junior year poetry sections, and if you want to make a buck off some kind of teen poetry niche (since you asked about agents and publishing companies right off the bat) then I think you're up shit's creek without a paddle. There's no money in poetry. Go to law school.
Also, try to write the best possible poetry you can without confining it to "teenagers" only. If it's good and the kid is smart, he/she will read it and love it. If it sucks, it could be all about some guy's prom date sleeping with his best friend and I still wouldn't give a shit (damn you Tyler).