Thirty-nine: the number of states whose prior math standards were "clearly inferior" to Common Core math standards.
Source: Thomas B. Fordham Institute, The State of State Standards—and the Common Core—in 2010
Amount spent for each student who is considered "proficient" in math: North Carolina- $20,417 Hawaii- $40,572 Washington, DC- $69,441
Source: CTEq Vital Signs analysis of U.S. Department of Education data from 2009..
States set the bar for passing their science tests in wildly different places, many of them below "basic" on the Nation's Report Card. (Download the gif here)
Source: Change the Equation, All Over the Map, 2011