Class Struggle - Why can't regular schools expand learning time?:
"I got an advance look at the first ever count of U.S. public schools that have significantly expanded learning time. The report by the National Center on Time & Learning, released today, reveals a surprisingly large number--655--give students an average of 25 percent more time than the standard six-and-a-half hours a day, 180 days a year. But I was disappointed that only about 160 of that group are regular public schools.
The District has 18 schools on the list, more than in all but ten states. But they are charter public schools. The majority of D.C. children are still in regular schools. They have not had a chance to see what a big jump in learning time might do for them."