catherine mathisCatherine Mathis has left Standard & Poor's for the top communications slot at McGraw-Hill Education.

The McGraw-Hill Cos. split in 2011 into the education unit and McGraw-Hill Markets, which owns S&P.

Mathis spent six years at S&P, guiding corporate communications for the ratings agency post-financial crisis. At New York-based McGraw-Hill, she takes the chief communications officer role as the company reaps millions from Common Core testing and builds out its digital education capabilities, moving on from its textbook roots.

She is a former spokeswoman and VP of corporate comms. for the New York Times Co., and VP of corporate relations for Overseas Shipholding Group.

Daniel Sieger is VP of comms. for McGraw-Hill Education, which hired Ogilvy PR last year as its AOR.