http://nces.ed.gov/pubs/eiip/eiipid24.asp http://nces.ed.gov/pubs/eiip/eiipid24.asp typically spend 40 more days annually in school spend as many or more hours in the classroom spend as many or more hours in the classroom http://nces.ed.gov/pubs/eiip/eiipid24.asp spend as many or more hours in the classroom