I only played through the house location so if the Highschool is completely different, the jokes on me.
The game is really good but with a caveat. The main gameplay is rather boring. You have to walk around the location, check every single room, and take a picture of the ghost.
A game like Bunker 78 has a similar premise but it works because you only photograph each ghost once and then the game is over. In a game like this where you'll be taking pictures of the game ghost over and over, I think something needs to be done to make the ghosts more of a threat. Running and hitting you can only go so far before its just boring. Plus, with all the pills you can find and buy, I never really felt in danger.
Maybe the hanging man drains your sanity if you look at him without the camera, or the boy teleports around. Or the demon has to be stunned with a cross before he can have his picture taken. Something just needs to spice up the interactions and I think adding a small gimmick to each ghost will do that nicely.
Otherwise the game is pretty good.