As a teacher I help my students cross the road almost every day because it is very dangerous. Yes, there are those who don't stop for police or see others stopping and just take the opportunity to put the pedal to the metal.
In fact I am glad there no longer is a police officer at our school, as when I am alone the drivers tend to stop more. And after 3 years doing this many locals now the drill when they see me and tend to slow down by themselves. Now there are on avarage only 3 dangerous situation a week.