From the Headlines today:

Pressure to pass standardized tests, shrinking budgets and world competition have lain a heavy burden on American schools, and the victims are not only recess, the arts and gym, but the students themselves. Ask any teacher, and they’ll tell you that behavior problems have drastically increased over recent years, a big part of the problem being the absence of physical activities and free, creative time according to a recent study.
From Truemors