Could it be Dyslexia?
There are many different types of dyslexia screeners out on the web. Some are free and some cost. Some are simple questionnaires and some are evaluations of skill. Here are a few of the screeners available to you.
This screener is a questionnaire for parents to answer for their child (or themselves)
This screener has the student answer questions as you input the answers into the computer. It asks children to read real words and non-real words.
This screener is one of the better ones that I’ve seen, but it is for kindergarten and first grade students. Lexercise created this for schools in Mississippi that have mandated early screening laws for dyslexia.
This is a very comprehensive screener that has 14 tasks. It does take a while (45-60 minutes) but the test can be paused and resumed later. The cost is $25 per child.
This is also a questionnaire that only has 13 questions.