Sue Shellenbarger:

When teacher Deena Randle took over a Portland, Ore., preschool class three years ago, behavior problems were so bad that “kids were bouncing off the walls, pushing and shoving, not listening — it was wild,” she says.
You’d never know it now. When Ms. Randle calls out, “Eyes up here! I need your attention,” one recent day, all 16 pairs of eyes in her class of 3- to 5-year-olds turn toward her. Beyond Ms. Randle’s considerable teaching skill, she and school officials credit a fast-growing curriculum that builds deliberate training in self-control right into the daily routine.
Behavior problems among small children are a growing issue. The possible causes are many: pressure on teachers to stress math and reading over emotional skills; family instability; a decline in playtime; heavy use of child care; or a rise in learning problems such as attention-deficit disorder. Based on preliminary findings from a federal child-care study, discussed last week at a conference for the Society for Research in Child Development in Denver, the slight increase in behavior problems found in children who spent lots of early time in child care persists all the way to age 15, in the form of more impulsivity and risk-taking.