We are trying to have our son tested for dyslexia, dysgraphia and dyscalculia but most facilities start with the WISC and the WJ. I don't see him be measured accurately because of the way these tests are administered and his specific learning differences.
I was looking at the battery of tests that you use on determining dyslexia and didn't see any IQ type tests, but perhaps I overlooked it. Is there a reason you don't include the WISC in your battery? I did see the WJ, but only for a reading portion. Do you know of any institution or individual psychologist who administers the battery of tests that you recommend in the state of Colorado? Thank you!
Current practices in diagnosing dyslexia no longer include IQ, called the "discrepancy model." Here is an article from NIH that does an excellent job explaining the new understandings. http://www.nih.gov/news/health/nov2011/nichd-03.htm
We need to assess a child's oral language skills as part of the assessment battery. Receptive vocabulary has been shown to be correlated to IQ, so we use that; although for the older student with a reading disability we also know that vocabulary skills can degrade over time if he is not exposed to the same texts (information) as his peers. We are looking for a pattern of strengths & weaknesses during an assessment or evaluation -- with strengths typically in verbal comprehension skills and weaknesses in text-related skills (reading, spelling, & writing) and sometimes verbal expression (word finding or naming, for example).
I do not know of specific people in CO. Given that I am in MI, I typically refer people to the IDA provider list for their state. http://www.interdys.org/ewebeditpro5/upload/co_2014_0908.pdf
Not everyone on this list will diagnose, though; some tutor. You'll need to interview the professional and ask how he or she would assess a child your son's age, what kind of experience he or she has had with your son’s age. Ask for references. Here's what a comprehensive assessment should look like http://dyslexiahelp.umich.edu/parents/learn-about-dyslexia/dyslexia-testing.
I hope this points you in the right direction.
