Gloriosa welcome!
take this on and do it because you can and because you are a lady with a huge understanding of the issues from first hand experience and you must have tremendous strength and determination shown by the fact that you were willing to take on the local education system, challenge poor and ignorant treatment and come out on top for your son.
Your Mum will be even more peoud of you if she can see from above what you are about to take on.
I am delighted your son has shone through despite everything. I am sure his experiences and his diabetes have left their scars on him but on the other hand they have also shaped him into the person that he is and like you despite everyhting he shone through with a triumphant 9GCSE's - he has a long way to go and very good luck to him - thank heavens for people like you!