Did adoption of common core standards seal the deal?

All of the Race to the Top winners adopted the Common Core State Standards.

District of Columbia: Adopted July 22
Florida: Adopted July 27
Georgia: Adopted July 8
Hawaii: Adopted June 18
Maryland: Adopted June 22
Massachusetts: Adopted July 21
New York: Adopted July 19
North Carolina: Adopted June 3
Ohio: Adopted June 18
Rhode Island: Adopted July 1