You could also go to the school and suggest this parent be strongly discouraged from driving to school as he presents a potential danger to kids who are riding there.
That reminds me; I saw a kid about 12/13 yrs old (not youf) last night on Fulham Road riding bike with a backpack and a helmet (>>>>) and extremely good sense of safety and road sense .. the traffic was hectic due to Chelsea game too .. made me happy on otherwise a mundane route home.
You could also go to the school and suggest this parent be strongly discouraged from driving to school as he presents a potential danger to kids who are riding there.