Cheaper teachers revitalize neighborhoods?!

Would bringing in more, better trained police turn around one of LA's poverty stricken ghettos (where half the young males are in street gangs)?  Then how will bringing in so-called charter schools staffed with higher turn over, lower paid, min-benefit teachers revitalize schools, not to say neighborhoods?!

All across the country the understanding has been gained that ghetto schools under perform because students (and some teachers!) don't expect anything remunerative enough waiting for them in the job  market to make the extra effort.
https://www.amazon.com/Cracks-Pavement-Social-Resilience-Neighborhoods-ebook/dp/B00332EXDM/ref=tmm_kin_swatch_0?_encoding=UTF8&qid=&sr=

For-profit schools can load up on programs because saving money on teachers?  Don't want to pay your employees a fair living -- then admit to yourself that you are not a progressive.