In general, I agree with what Bandnerd is saying. But (you knew that was coming) I *do* confront students directly and I have no problem with angry young men in my face. Caveat: I teach in a small school where students have often been there since 3 pre-k. They know one another well, and they are socialized to be members of a community. That said, when a student is disruptive I stare at him or her and if that fails I speak up. I've done this everywhere I ever taught, which is fairly wide range of places. It works, but I have a pretty substantial classroom presence. No one would mistake me for someone to bully. I think you should consider that any approach is dependent on *you* as much as on them.