Long story short.
Ds is 13 now and in year 8. Aged 6 we pushed for an assessment as he was really struggling in school. Poor reading, terrible writing etc.
Got assessment through school. Called in for meeting and told definitely dyslexia, issues with numbers and letter (more numbers) and memory. We were given a 'statement' as we're the school. They were told by psych the best things to do.
18months later we moved but details of all this not sent from old school. New school didn't think new assessment needed they could see the issues he had and put measures in place.
Between then and now his reading has improved hugely. He is doing very well in school but still has big problems with memory and reversing letters and numbers (much worse with numbers). The school are basically saying there is no record of there ever being a statement for him so they can't do anything. They know he is dyslexic but that is it. He gets no additional support.
His maths teacher is furious. Ds is getting all the answers correct but he can't understand what ds is presenting in his book.
I've just come from a meeting basically been told that's it. It need to get ds to practice his times table 
Do I pay for a private assessment and go back to them? Will they actually take notice of that?