A Statement from Houghton Mifflin Harcourt

BOSTON – Houghton Mifflin Harcourt released the following statement regarding the departure of Rose Else-Mitchell as the company’s Chief Learning Officer and Executive Vice President of Professional Services:“For the last 18 years, Rose has been one of the leaders in the education technology movement focused on creating personalized, engaging and effective classroom solutions – such as READ 180 and MATH 180 – that nourish the relationship between a teacher and her students as well as leverage continuous, formative assessment data to drive a teacher’s instructional decisions,” said Jack Lynch, Chief Executive Officer of HMH. “We thank her for her significant contributions and wish her well in her future endeavors.”Else-Michell said, “As I open the door to my next chapter, I want to thank Jack and the HMH Board for the opportunities they have provided me to shape the path toward the learning company vision and strategy. I wish HMH and all of its talented people the best for the future -- I will be watching for the successes that lay ahead.”Else-Mitchell will remain in her role until the end of June to assist with transition.About Houghton Mifflin Harcourt Houghton Mifflin Harcourt (NASDAQ: HMHC) is a learning company committed to delivering integrated solutions that engage learners, empower educators and improve student outcomes. As a leading provider of K–12 core curriculum, supplemental and intervention solutions and professional learning services, HMH partners with educators and school districts to uncover solutions that unlock students' potential and extend teachers' capabilities. HMH serves more than 50 million students and three million educators in 150 countries, while its award-winning children's books, novels, non-fiction, and reference titles are enjoyed by readers throughout the world. For more information, visit www.hmhco.com. Follow HMH on Twitter, Facebook and YouTube. CONTACT Investor Relations Brian S. Shipman, CFA SVP, Investor Relations 212-592-1177 Brian.Shipman@hmhco.com Media Relations  Bianca Olson  SVP, Corporate Affairs  617-351-3841  Bianca.Olson@hmhco.com