I remember seeing a trailer for this movie a while back and thinking it looked decent even though it was a teen horror and I think it started out well but it was trying to be clever and intorduce a plot twist towards the end that just didn't work, combine that with the fact that soon after the killing started I found myself getting bored wasn't a good sign.
Overall the movie was predictable and kind of dull but as teen horror movies go I've seen a lot worse, the guy who made the trailer should get an award for his work.