Assessments vs. Screening
The only way that dyslexia can be formally identified is by a Diagnostic Assessment for Dyslexia carried out by a qualified assessor. Screening tests can be a really useful tool as long as they are carried out with the understanding that they can only give an indication of possible dyslexic difficulties.
There are many different types of screening tests; some have to be carried out by a trained SENCo whereas others can be taken online. We would always advise that if a screening test indicates that there is a moderate to high probability of dyslexic difficulties that this is followed up with a Diagnostic Assessment. This assessment will determine the precise nature of the difficulties, and how they can best be supported.
Find out more about Diagnostic Assessments.