FILE - In this Sept. 14, 2010 file photo, President Barack Obama shakes hands with students after delivering remarks at his second annual back-to-school speech, at Julia R. Masterman School in ... more 
FILE - In this Sept. 14, 2010 file photo, President Barack Obama shakes hands with students after delivering remarks at his second annual back-to-school speech, at Julia R. Masterman School in Philadelphia. Obama's call for a longer school day and year for America's kids echoes a similar call he made a year ago to little effect, illustrating just how deeply entrenched the traditional school calendar is and how little power the federal government has to change it. less 
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Associated Press | Photo By Pablo Martinez Monsivais, File
Tue, Sep 28, 2010 8:03 AM EDT