While we're on the subject of "teen screams" with Scream & Last Summer... I brought this up last year as I watch it watch each October, but I don't think most people have seen this one:
2005's: Cry_Wolf
Notice the cyber theme in this one:
It is a bit of a time capsule of technology. Reminds me of my freshman year in college. Laptops becoming main stream, T Mobile Side Kicks, AOL AIM on phones (text msg not big yet), and... a serial killer comes to life from a chain Email?
OK not that last one but it makes for an entertaining and different PG13 teenage horror movie experience. It's slasher meets psychological.
Pretty cool back story on how the director was funded to make this on a budget:
Cry Wolf (stylized as Cry_Wolf) is a 2005 American horror/slasher murder mystery directed by Jeff Wadlow after he won $1,000,000 at the 2002 Chrysler Million Dollar Film Festival
Nice return there, made $15.5 million.