FILE - In this May 24, 2012 file photo, Republican presidential candidate, former Massachusetts Gov. Mitt Romney greets Justic Green during a tour of the 6th grade language arts class a

 

              FILE - In this May 24, 2012 file photo, Republican presidential candidate, former Massachusetts Gov. Mitt Romney greets Justic Green during a tour of the 6th grade language arts class a
FILE - In this May 24, 2012 file photo, Republican presidential candidate, former Massachusetts Gov. Mitt Romney greets Justic Green during a tour of the 6th grade language arts class at the Universal Bluford Charter School in Philadelphia. States and local governments have the primary responsibility for education in the United States. But the federal government gets a big say, too, by awarding billions in aid that often has strings attached. (AP Photo/Mary Altaffer, File)