This question is perhaps best answered by Reid and Guise (2019)
“ the importance of an assessment. It can be a trigger for a smoother and more appropriate path for the individual and can help to relieve some of the stressors that can accompany dyslexia. We find that parents in particular are usually relieved and can be quite emotional during the feedback when a diagnosis is presented. Assessment therefore can be the key ingredient for eventual success. The assessment also promotes self-advocacy, and this is crucial for the young person with dyslexia, particularly as he or she advances further up the school, in further and higher education and the workplace! Self-advocacy can stem from self-knowledge, and the assessment can provide the individual with this self-knowledge.”