Tell us more about your school - urban/rural, catchment, transport options etc.
My kids go to 3 different schools now (aargh) all of which now have School Streets. This means drivers can't drive past the schools at drop/pick times, without getting a massive fine. One road (once an insane cut-through) has also been made into a no-through-road.
All of these are camera-enforced closures, and in the early days there were tens of infringements each day, and the council will have raked it in. Now there are barely any.
Parents w disabilities/who have children w disabilities are exempt from the closure, as are residents.
It's been absolutely amazing. Has transformed the start and end of the day. At the primary school they also widened the pavement (took in the parking spaces, so there's now no parking available on one side of the road).
Some nearby parents still do drive, but fewer (because it's now a menace to get close), and those who do have to stay a bit further away, so don't create danger by the gates.