Decent watch, might watch again, but can't honestly recommend.
This is not a great movie, and it is impressive breaking in the sense that it takes real problems and an example of awful real places, so it's hard to get on board right away.
Once the setting is established, the majority of what's good about the movie is the ridiculously gratuitous gore and violence being exacted on the horrible characters.
By far, Sierra McCormick is the best actor in this movie. She does such a good job exemplifying a tragic ghost, but since all the adults are just awful, and there are only 2 decent actors out of the rest of the teens, it is a little hard to tell how good she is.
Again, this is more of an elaborate survival situation, which is more of an excuse show teens getting slashed.
So if that doesn't work for you, don't watch this.