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Select the area in which you need more support. Our teams of dedicated experts can communicate with you
via phone or email.

Technical Support Rostering Team

Hours of Operation 8:00 a.m. to 7:00 p.m. ET M–F – Holidays Excluded

To save time, please consider sending an email. Many customers find it helpful to receive written documentation when addressing software or server issues.

When sending us an email request, please be sure to include the product name, any applicable user account information, and any other information that may help us research the issue you are experiencing.

Phone

800.323.9239

Product Technical Support

Hours of Operation 7:00 a.m. to 11:00 p.m. ET M–F – Holidays Excluded

To save time, please consider sending an email. Many customers find it helpful to receive written documentation when addressing software or server issues.

When sending us an email request, please be sure to include the product name, any applicable user account information, and any other information that may help us research the issue you are experiencing.

 

Phone

800.323.9239

Email

Click here to send an email to Technical Support.

Click here to search our online self-service system with access to thousands of helpful articles, User Guides, and more.

Intervention Solutions Group (Formerly Scholastic Education Technology)

Hours of Operation 8:00 a.m. to 7:00 p.m. ET M–F

Address

Houghton Mifflin Harcourt
Intervention Solutions
255 38th Avenue, Suite L
St. Charles, IL 60174

Phone

Customer Service: 877.234.7323
Technical Support: 800.283.5974

K–12 Educational Materials

Hours of Operation 8:00 a.m. to 10:00 p.m. ET M–F, Saturday 9:00 a.m. to 5:00 p.m.

 

Address

Houghton Mifflin Harcourt Pre-K-12
9205 Southpark Center Loop
Orlando, FL 32819

www.hmhco.com/classroom

Phone

800.225.5425

College & University Educational Materials

Assessment Materials (Riverside Publishing)

Address

Customer Experience Support-Assessments
Houghton Mifflin Harcourt
255 38TH Avenue, Suite L
St. Charles, IL 60174

Online
www.riversidepublishing.com

Phone

800.323.9540 / 630.467.7000

Email

For Domestic Email Orders, click here. (International Orders, click here.)

For Domestic Inquiries, click here. (International Inquiries, click here.)

Fax

630.467.7192

HMHCO.com

Hours of Operation 8:00 a.m. to 10:00 p.m. ET M-F, Saturday 9:00 a.m. to 5:00 p.m.

Please do not send credit card data via email.

Address

Online:  www.hmhco.com

Phone

855.969.4642

Fax

800.269.5232

Saxon Home School

Hours of Operation 8:00 a.m. to 10:00 p.m. ET M–F, Saturday 9:00 a.m. to 5:00 p.m.

Address

Specialized Curriculum Group
9205 Southpark Center Loop
Orlando, FL 32819

Phone

800.225.5425

Email

Click here for order placement.
For Questions about Saxon Math Homeschool products, send an email to
Click here for Inquiries.
For questions about a specific Saxon Math Homeschool problem, send an email to
Click here For Inquiries.

Fax

800.269.5232

Adult and Children's fiction, nonfiction, and reference (Trade)

Hours of Operation 8:00 a.m. to 6:00 p.m. ET M–F

Address

HMH Trade & Reference
9205 Southpark Center Loop
Orlando, FL 32819

Phone

800.225.3362

Need More Help?

HMH Customer Care  

 

Intervention Product Support