Sorry to say the same thing, but what worked for us was "objective" data in the form of the school's own standardized tests as well as the SCAT (an above-level test), which the kids took outside of school. When I gave them the SCAT scores, I also printed out and gave them CTY's recommendations for services for kids scoring at various percentiles. If you think SCAT scores might help, taking the SCAT is relatively cheap and you get the scores almost immediately.