We all remember that one teacher who went the extra mile for us, but what if that extra mile turned into a whole creepy-ass form of dysfunction? Such is the case in our exclusive trailer debut for Teacher, the new psychological thriller starring David Dastmalchian (Ant-Man) as a high school teacher who spirals out of control when he goes to disturbing lengths to protect his favorite student from bullies and challenge the power of a wealthy patron in their suburban community (Kevin Pollak). Written and directed by Adam Dick, Teacher was produced by Matthew Helderman and Zach Kamen. …