Boston–based Houghton Mifflin Harcourt is the largest US K–12 educational publisher in the United States, with more than $2.7 billion in annual sales. The Company publishes a comprehensive set of educational solutions, ranging from research-based textbook programs to instructional technology to standards–based assessments for elementary and secondary schools and colleges.

The Company also publishes an extensive line of reference works and award–winning fiction and nonfiction for adults and young readers. In 2006, Riverdeep acquired Houghton Mifflin, bringing together one of the most respected print publishers with the leader in interactive courseware. In December 2007, Houghton Mifflin/Riverdeep acquired Harcourt Education Company creating the largest US K–12 education business. With origins dating back to 1832, Houghton Mifflin Harcourt combines its tradition of excellence with a commitment to innovation. To learn more about Houghton Mifflin Harcourt Click Here