Hello everyone, since we all love discussing what we think is gonna happen, i though why not make an official "thoeries blog"? Have an interesting idea? Share it here! :)
One clear theory is that Tate could hate Constance because She cheated on his father (as stated in "Pilot). Another possible theory is that Tate was molested/raped by Constance at a young age, which could be the reason Beauregard is deformed. He could have shot the school due to bullying, and instead of just targeting his bullies, he went after everyone. Or he could be acting on his strange idea that killing people he likes will take them away from the cruel world.
I think Violet is turning into Tate, or is a female variant of him. They share the same bedroom, they both had cheating parents, that have the same interests, they are both the odd kids at school, etc. Violet is going through a tough time at the moment, and her sanity over the spirits, and the events that are going on with her parents could send her over the edge, and she could shoot the school as Tate did.
Those are my current theories :) Hope to see some from you guys!