When I asked my daughters doctor once if I had home-schooled her would she not have ADHD she told me it probably would have made no difference. She further said that about 1/3 of the kids in her practice have ADHD and are being home-schooled. She did not tell me 1/3 were medicated, or that she sees all the kids in the district, or how many children she sees, or any other information. Just that about 1/3 of the kids in her practice had ADHD and were home schooled. This question and comment were asked quite a while ago. Probably around 10 years or so. I haven't asked her since then if the numbers are still the same. If I think about it the next time I see her I might ask again. But then again, since my daughter is 20, she doesn't really require Mommy when she goes to the doctor.
FWIW this doctor and I worked together for quite a while to stay away from medications for my daughter. We tried alternative diets, counseling, behavior modifications, supplements, and even hypnosis. We went the medication route after 2 years of trying/failing. It was during this time I briefly home-schooled her and when I saw 1 on 1 what was going on with my kid, I decided to try meds. They were the only thing that worked for her.