But, that case was not proven conclusively. Because it is just common sense that schools in liberal areas do not teach as well as schools in conservative areas. Permissive cultures lead to teen pregnancies, large school drop-out rates and hence, more crime. Conversely, most conservative communities will not allow that vicious circle to get started. In low crime areas, police do not have much to do and so can pay close attention to misbehavior by teens that would be overlooked in busy urban areas.
Teachers usually keep strict discipline in the classroom.
And children go home to a family atmosphere that will insure they get their homework done. Parents and police both tend to work to insure kids are at home by a reasonable hour. Many of these differences are very obvious, too. In Detroit, kids feel free to backtalk anyone, often with a very nasty choice of words. It's not uncommon to see nine or ten year old kids running the streets well after midnight.