After contacting EVERY talent search listed at Davidson, we found our solution for the EXPLORE through the Belin-Blank Center's talent search:
http://www.education.uiowa.edu/belinblank/TalentSearch/Default.aspx

They will allow you to do the test at your school, provided you can get a teacher, principal, etc., to serve as proctor. (Belin-Blank provides all the materials & instructions.)

Familiar environment & quick commute vs. strange environ and mind-numbing travel there & back.

Total cost is $75 or so.

Win-win-win.

Being offended is a natural consequence of leaving the house. - Fran Lebowitz