Ah, now that's interesting, because ds2 has always struggled with letter reversals and took a long time to get the hang of reading. I was going through some of his year 1 and 2 schoolwork the other day and noticed that back then he was not only reversing horizontally - d, b, p, q, l, t, j, g, h, s - in fact just about anything it's possible to reverse - and mirror writing his name, he was also vertically reversing m and w - so mom, became wow! 
He also reversed most numbers that it was possible to reverse. I have approached the school about it on several occasions and been fobbed off. In infants it was, wait until the juniors, then last year (year 3) his teachers did agree there was something going on, but instead of agreeing to get him assessed they had a big push on getting him to check for and correct reversals and it did help, but still insisted he didn't need assessing.
A friend of mine is severely dyslexic, a qualified dyslexia teacher and also the chair of a dyslexia charity and she said she thinks he probably does have some degree of dyslexia, but that at his level getting support would be nigh-on impossible.
In addition to that he struggles with his speech. He stammers and repeats things, particularly the start of sentences, over and over - like he just can't get the words out in the right order - he also tends to mishear things.
I do think it's more complicated than JHS alone. Probably some audio and visual processing issues, as well as dyspraxic traits, but none of it bad enough for anyone to bother taking seriously - except us. 
He is doing ok academically, good middle range student and happy there though, so I don't feel he wants or needs me to start pushing.