It’s not ADD or ADDHD. It’s really BAD (Bad Attitude Disorder) in most kids and parents. The drugs are a way of making them into zombies so they don’t have to be parented and the schools don’t have to manage them. Personal responsibility then is off parents, the kids and the schools. What a terrible joke.
I suggest you read the posts of people whose kids are ADD/ADHD or who have taught a number of them. They are the longer ones whose authors have stories to tell of real kids with real problems that are not long-term cured by discipline, punishment, or physical exercise.
Your solutions are simple, but they don’t work on the real cases. It is like telling a person who has a brain tumor to act normal or you will make them stay after school and it that doesn’t work you are going to smack them.