If aeh was doing the testing, I'd say go for it!

Seriously though, it's so dependent on the tester and her attitude. And the scary thing (to this paranoid parent) is the record the test will create in the school system. It will go down indelibly in black and white, with no color added for things like "The tester was cold and unwelcoming to my child and refused to help her understand instructions." Or whatever. So at a minimum, I'd ask for a meeting with the tester to take her temperature about the whole thing.

I am seriously paranoid about this sort of thing, though. So - a grain of salt goes well with my response!

Sue