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Site FAQ

Do you accept Purchase Orders?
Yes, please send order form and purchase order to:

Houghton Mifflin Harcourt
Intervention Services Group
255 38th Street, Suite L
St. Charles, IL 60174

Phone: 877-234-7323 (Option 1, then Option 2 - Product, READ 180/System44)
Fax: 800-724-4716

Email for Order Placement:
Email for Order Inquiries:
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Can I use a Purchase Order online?
Yes, when payment method is requested at checkout, please enter purchase order number under "account."
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Once I place my order, how long does it take to ship?
You should receive your order 7-10 business days after we verify/receive your payment.
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Can I view an item before purchasing?
No, but if after purchasing the items, you find that they do not fit your needs, we offer a full refund on the item(s).
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I placed an order online and when I entered my zip code it said "we do not ship to that zip code."
We ship to every state. If you run into this issue, please call us at 877-234-7323 (Option 1, then Option 2 - Product, READ 180/System 44) to provide your information over the phone.
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I am trying to place an order but cannot seem to find the title I need.
Please call us at 877-234-7323 (Option 1, then Option 2 - Product, READ 180/System 44) and we will assist you in finding the publication.
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We are tax exempt.
Your order will be charged tax unless your school or district is the bill-to and Houghton Mifflin Harcourt has a tax-exempt form on file for that institution. Please send tax exempt documentation to or fax to 800-724-4716.
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Do you offer discounts?
We do offer discounts from time to time and promote on the store home page and via social media. We are also able to discount volume orders. If you plan to place an order that is more than $250.00, please contact us at with subject line: Volume discount on ICLE books. We will connect you with a representative who can put together a cost proposal that includes a volume discount.
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What are your shipping costs?
Shipping is 10.5% of total order, with a minimum of $2.25.
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Do you offer discounts for resellers?
We are the sole source vendor for most of our publications and customers must purchase from us directly. The exceptions are: Making Schools Work; Moving Beyond Quadrant A; and Bold School. Resellers can contact HMH Customer Experience at 877-234-7323 (Option 1, then Option 2 - Product, READ 180/System 44) in regards to these titles.
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We are trying to order but you are not listed in our system.
The order will be fulfilled by Houghton Mifflin Harcourt, so POs should be addressed as such. If Houghton Mifflin Harcourt is not in your system, we can send you a W-9 to become an approved vendor.
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