I have heard (not an expert in this area!!) that boys/men truly have "selective hearing." I figure that you either work around it, or train them to pay attention. My guess is that their futere wives would prefer the later!
I think that the schools have to use what options they have for time-out. If the hallway is what your school has, so be it. I've never had a client whose primary trauma was a school time-out.