I'm not from AZ, but I would think most psychologists could do necessary testing, if you're just talking about an IQ and achievement instrument, like the WISC and WIAT.

The safest thing is to contact the gifted coordinator for your district, and ask what testing they require. Some schools would only ask for proof of IQ above 125 or 130, while others might want achievement testing that shows scores above the 95th percentile. Some schools would say there has to be high performance in particular areas (ie, reading and math) but other school districts would say high achievement in any one area would be enough for eligibility.

For general information, I'd like to invite you to join Greatschools Gifted Parents Group at community.greatschools.net/groups/11537