Around here we have school zones and school crossings. School zones are the street directly adjacent to school property. I believe there also has to be access to the school property from the street for it to qualify as a school zone. School zones are 15 mph.
Tolar TX is a pretty good example of a speed trap town; US377 goes from 70 to 65 to 45 as you enter, then a 35MPH school zone on weekdays, because there's a school 3 blocks off the highway. There's usually a cop watching, too, even though they only have a population of 504, their "police department" consists of one paid cop and two "reserves." (Meaning two guys who wasted the money on all the TCLEOSE training and certification, and can't even get a real department to hire them as meter maids, and somehow think that unpaid "reserve experience" driving Tolar's one police car while the real cop's asleep will help with their job prospects. It's quite telling that their city website's police department section only lists 911 (which goes to the sheriff's department) and the sheriff's department non-emergency number.)
They almost lost that a couple years ago, though, when their "real" cop tried to forcibly arrest a sheriff's deputy for evading arrest. Seems the deputy went through code 3, and the local pursued; the deputy thought he was getting backup, but ended up having to subdue and cuff the local so he could deal with the original call. Needless to say, they no longer have a very good relationship with the only department that might ever be in a position to back them up.