Dyslexia is diagnosed using multiple tests, possibly as many as twelve, in areas such as speech, hearing and auditory processing, vision, memory, IQ and handwriting. Family histories will likely be requested as well. Evaluations are often performed by school reading specialists or psychologists, but these professionals might not have particular expertise with dyslexia.
Testing should be done by a dyslexia expert. It is important to remember that when schools are evaluating a child, it is to see if the child is eligible for special education services. Unless a child has severe dyslexia, they usually won’t meet the legal criteria for services and will likely be left to struggle.
If you suspect that your child might be dyslexic and have a family history of dyslexia, ask your pediatrician to help you locate a dyslexia specialist for evaluation. With the right strategies and accommodations, your child can succeed and even thrive in school despite these challenges.
Source: author experience
Bright Solutions for Dyslexia website