Where I live it is common to see both police and school buses doing 70 in a 55. People don’t realize that what matters is keeping up with the flow. And if a cop ever pulls you over for doing less than ten over - even in a 25 mph zone, it’s for some other reason than your speed. That is just the excuse.
I've seen skool buses run red lights. That's not cool.
Recently, I was in a backup on an interstate. Turns out the problem was a cop doing 60 in a 70 zone, and nobody would dare to pass him!
I have been in a car with a friend doing 10 over the limit on a highway - which was slower than the prevailing flow of traffic - who had a cop roll up in the passing lane, cut in behind him and tell him over the PA system to “SPEED UP, YOU ARE BLOCKING TRAFFIC.”