FILE - In this Jan. 10, 2014 file photo, third-grade teacher Chris Maske explains a grammar lesson using the controversial South Dakota education standard known as Common Core at Freeman Elementary in... more 
FILE - In this Jan. 10, 2014 file photo, third-grade teacher Chris Maske explains a grammar lesson using the controversial South Dakota education standard known as Common Core at Freeman Elementary in Freeman, S.D. On Monday, Feb. 24, 2014, the South Dakota House Education Committee addressed three bills relating to the contested Common Core standards. (AP Photo/Jeremy Waltner, File) less 
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Associated Press | Photo By Jeremy Waltner, File
Mon, Feb 24, 2014 2:57 PM EST