Dottie,
We are testing through a company/Academy in Florida. They open up their testing to anyone in the country who want to sign up. I verified with NWEA that it was a legitimate organization and he confirmed that it was and they've had them as a testing partner for several years. We had to sign up by Feb 2010 for the April 21-May 21 testing window. We have from 7am-7pm eastern Monday-Friday to complete the test. The Academy gave us a username, password, and we had to download some bit of software ...a player of some sort and it all worked smoothly.

Dazey
Here's a link to the Academy. http://www.acces-inc.com/testing/index.html

In June, when their test window is closed, they will send out official score reports. But as someone posted here from a child in public school, the score is flashed on the screen at the end of the test. It says that score is unofficial until the official report comes.