This is to Will: I work in a school with no walls. Having just under 700 children learning in a relatively small space, with book cases and movable partitions (for coat hooks/supplies) dividing the classroom spaces. The teachers, to get the attention of their class, do the opposite. With stillness and low volume, the teachers draw the kids eyes and ears. It's an art . . . It's a way . . . It commands respect. Very Christ-like.
Have a fabulous day!