If you open the link at the end of this post, you can view the graphic for the age group 15-24 (as well as other demographics), and then slide along the time line to see what activities people are engaged in at different times of day (including Education):
New York Times Business
How Different Groups Spend Their Day
Published: July 31, 2009
The American Time Use Survey asks thousands of American residents to recall every minute of a day. Here is how people over age 15 spent their time in 2008.
http://www.nytimes.com/interactive/2009/07/31/business/20080801-metrics-graphic.html
