HAM you phucker...heh, I read that one early, but with no permission from the aged at all.
I did some research because my brain has this habit of losing information if it's more than 5 years old, plus most of my reading at that age was not governed by parentals (thank God).
Charlotte Perkins Gillman: The Yellow Wallpaper: Freaky freaky story, really wigged me out, very good stuff. Here's a link to an essay she published on why she wrote it which could be a good follow up for the kiddies (
http://web.media.mit.edu/~davet/yp/whyiwrote.html)
I suggest Lovecraft as well, it is heavy but still good stuff, and the Re-Animator story is faboo! And Neil Gaiman's Shoggoth's Old Peculiar would be a kick ass follow up to Lovecraft studies, if they laugh, you know they were paying attention wink
Ellen Datlow & Terri Windling have put together many volumes of the year's best fantasy & horror plus a few neat anthologies of modern retellings of fairy tales, & Neil Gaiman's Snow Glass Apples is very good. He also has another spooky story The White Road, and Troll Bridge is excellent. I can't think of anymore PG-13 Neil, but most of his stuff isn't too crazy if you're willing to skim Smoke & Mirrors or Angels & Visitations for something appropriate (keep in mind they repeat a couple of the same stories).
And you could always read some classic fairy tales to boot anyway, those are damn horrific.
And Ray Bradbury has some nifty stuff as well that would be fine for that age group.
That spends my blasted memory for the time being, let us know what you end up reading, I'm curious, plus I never got fun stuff to read in school, except Poe but I think everyone ends up reading at least one Poe story.