I think I would have got a lot out of it if I had seen an Ed Psych when I was at school. My brother was severely dyslexic, not reading at 9, and because my mother was a teacher, he did see an Ed Psych, was diagnosed and given specialist tutoring to at least get him to a basic level of reading and writing. His schools were of course entirely unsupportive and he left with a CSE in woodwork, but has since got a degree in Engineering on day release and now Heads up the Engineering department of a mid sized European company, something he clearly wouldn't have been able to achieve without that intervention.
I meanwhile struggled along, thankfully my school took a phonic approach to teaching reading, I scraped into Grammar School, with a pep talk that I was clearly bright but very careless (which was mystifying for me since I was so careless I didn't even remember sitting the exam), and it was a source of constant mystery to my teachers that I could have such good ideas and insight but do so badly in exams. It was put down to what one of my teachers described as "insouciance". I did get progressively better at exams as ideas became more important and rote learning less so and I had a successful career exploiting all those dyslexic strengths, seeing the big picture, creativity etc. BUT I wish I had known why I found it so hard to organise myself and remember things, why I couldn't spell, why I got the good ideas after the meeting had moved on and then had to send it round to the participants after etc etc. Armed with that knowledge it would have helped me cope with my weaknesses and play to my strengths and most importantly I would have had confidence in my ability, instead of always thinking I was a bit slow and stupid. I now have two Master's degrees and I'm studying for a PhD.
My daughters and nieces and nephew are all moderately to severely dyslexic but bright enough for, with the exception of one of my DDs, it not to have been picked up until they were into their teens. As a result of support at school and uni, including equipment and extra time in exams, they are now being helped to achieve their potential. Thanks to the Ed Psych reports I know exactly how able my daughters are and their strengths and weaknesses. It's still not plain sailing and we still struggle to build their confidence and support them and the "label" has been a disadvantage with certain teachers and ignorant peers and their parents, especially when DD got into a more selective school than their DDs but certainly not to the extent that I would not have sought an Ed Psych report.