Kids need to play at school

You mean they needed researchers to tell them this?

U.S. school children need less work, more play: study

CHICAGO (Reuters) – All work and no play may be a hazard for some U.S. school children.

Researchers reported on Monday that a growing trend of curbing free time at school may lead to unruly classrooms and rob youngsters of needed exercise and an important chance to socialize.

A look at more than 10,000 children aged 8 and 9 found better classroom behavior among those who had at least a 15-minute break during the school day compared to those who did not, Dr. Romina Barros and colleagues at the Albert Einstein College of Medicine in New York reported.