Duane:  You're quite right.  As class sizes increase the ability to work with individual students decreases and the more time spent just keeping control increases.  Supervision is important, in the classroom and on the schoolyard.  There mere presence of an adult is often enough to keep things functioning w/o issues.  "Lord of the Flies" has always been an important reference to me as I think about young people and their need for adult supervision, instruction and support as they grow into responsible adults.  regards, Gary crum