I took my son out of school for the day
Why did you think that that was the right thing to do?
He strikes me as a future delinquent.
If you think that he might be a future delinquent then you shouldn't contribute to their failure. You're the parent in this situation and should be doing something that might decrease their chances of success later in life.
It might be good to have some fun. He's at school everyday.
School is where he needs to be. You should try your best to give your child the best chance at success in the future.