Physical education/physical activity: The percentage of districts that required elementary schools to teach physical education increased from 82.6% in 2000 to 93.6% in 2012. Tobacco: The percentage of districts with policies that prohibited all tobacco use during any school-related activity increased from 46.7% in 2000 to 67.5% in 2012. Nutrition: The percentage of districts that required schools to prohibit offering junk food in vending machines increased from 4.1% in 2000 to 43.4% in 2012.

Stephen B. Thacker CDC Library collection