Press Releases Displaying 81-83 (83) « Previous1314151617 Press Releases Conor McGuinness appointed Vice President, International Finance and Operations at Houghton Mifflin Harcourt January 27, 2011 read more Press Releases Study Finds Houghton Mifflin Harcourt’s Singapore Math Program Raises Student Achievement in the U.S. January 18, 2011 read more Press Releases Houghton Mifflin Harcourt Acquires The Leadership and Learning Center; Company to Continue Transforming Schools by Combining the Best Learning Resources with Premier Professional Development January 10, 2011 read more Displaying 81-83 (83) « Previous1314151617