There have been a number of complaints on SeeClickFix about speeding school buses and dangerously parked school buses. Speeding is difficult to document, but if you're creative a video camera will go a long way.
Check out the video here of a school bus going 36 in a 25 and see how they nabbed them. http://www.seeclickfix.com/issues/4646

And if you can afford to purchase a Radar gun, check out this issue in Brooklyn:http://www.seeclickfix.com/issues/909

Fun Stuff. The Clickers never cease to surprise us.