BOSTON--(BUSINESS WIRE)--Global learning company Houghton Mifflin Harcourt (HMH) announced today the launch of the HMH Educator Confidence Report, a new annual report that surveys over 1,000 teachers and school and district administrators across the United States on a range of issues, including top areas of concern and excitement, technology use in classrooms, and plans to remain in or leave the teaching profession. The inaugural survey found strong digital adoption driving optimism among educa