Working Interpreters: Use these programs to enhance your knowledge and use of classifiers. Treehouse Video is an RID Approved Sponsor for the Certification Maintenance Program. Earn RID Professional Studies CEUs by using these materials. These CEUs are also recognized by state licensing entities. Want to try before you buy? Add the Free Mini Course to your shopping cart and earn 0.1 CEUs free!

We are converting the entire series to an online only format. Currently, Program 1 and Program 7 are available online. The rest are available as CD-ROMs that play on all PCs running Windows, and on Macs running no later than Mac OS 10.6.8.