Take a deep breath.
It's good that the school is responding to your request for testing and that your son is excited about it.
You may not get the results right away, but when you do, you can always come here for help with interpreting them. Hopefully, the school psychologist will provide you with some information about how to interpret the scores.
Meanwhile, you can familiarize yourself with the different kinds of tests by reading
http://www.hoagiesgifted.org/gifted_101.htmHang in there! I think you're headed in the right direction
Cathy