Frequently Asked Questions

How do I use Notgrass in a co-op?

We designed our courses for use by individual families. However, we have had many co-ops use our courses for group study. Here is some of the feedback we have received: "This is the best history course I have ever used. I teach a co-op history … read more

Where can I read reviews of your curriculum?

Notgrass has thousands of satisfied customers across all fifty United States, Washington, D.C., numerous U.S. military bases, Australia, Canada, New Zealand, and the United Kingdom. New customers often come to us because of a referral from a frien … read more

How can I place an order?

Add items to your shopping cart as you browse our site using the buttons provided on the product pages. Then complete the checkout process using our secure server. You may pay with American Express®, Discover® Network, MasterCard®, VISA® Card, o … read more

What is your refund/return policy?

We want you to be completely satisfied with your purchase from If your shipment is incomplete or you find a defective product, contact us for a prompt replacement. If after using your Notgrass curriculum for 30 days, you decide tha … read more

Do I have to pay sales tax?

We collect sales tax on orders shipped to these states: Arizona California Florida Georgia Illinois Indiana Kansas Kentucky Maine Maryland Massachusetts Michigan Minnesota Mississippi Missouri Nebraska New Yor … read more