My son has a complicated medical history as well as CAH but we had the same problems. He is very bright but would only sit still if something interested him and he is very active. Our approach was to cut out all stimulants. This included caffine, all food colourings(in sweets, ice-creams etc) and processed foods when possible. At school we make sure he has a snack every two hours, which is fruit or something as plain as possible. We have found that keeping a steady blood sugar level has helped no end. Liam is 8.5 and takes care of this by himself now and he fully understands the reasons for it. We do not have sugar in the house and try to stay away from artifical sweetners. He used to take his epileptic medication in a bright pink syrup form. When we insisted in tablets instead, the reduction in hyper-activety was amazing. We are very fortunate in that Liam loves vegetables, hates fizzy drinks and does not complain when we say he cannot have certain sweets. He actively looks for E numbers etc now himself. We had a nightmare dealing with a school in France with similar problems to you. The best thing is to approach the school with a special needs coordinator who understands the situation along with a doctor. Have the meeting with all the staff if possible and not just with the headteacher. I hope this helps and good luck. Shaun P.