Please visit the following website:
www.harcourtassessment.com
and type in the Keyword Search: Field Testing or Becoming an Examiner
This will allow you to see what Harcourt Assessment is working on and, also, if you are interested, you can take steps to become an examiner and help Harcourt in the development of different tests.
You can always call 800-233-5686 and speak with someone about this opportunity.