Every day, your child comes home with a story about THAT kid. You're worried that THAT child is detracting from your child's learning experience. I want to talk about THAT child, too, but there are so many things I can't tell you.
A current trend in classroom management is to hold kids in from recess as a means of disciplinary action. The problem with this strategy, of course, is that kids need recess. They need to decompress, burn off energy and socialize.
Computers, video games etc. have absorbed so much of our children's time that we often forget about real interaction. We also forget about the effects of TV as it relates to young children and their functioning in the classroom.