From the article:
"Staten Island City Councilmen Steven Matteo and Joe Borelli and Borough President James Oddo also asked de Blasio to have an armed police officer at each of New York City’s 1,700 public schools, at the state Senate Feb. 28. De Blasio refused, saying the policy would be too expensive, claiming that it would cost the state $12 billion annually, he wrote in a letter in June 2017. "
I did the math (picky me). That would be $7,058,823 per school per year.
I think maybe we gots to apply for one of them jobs, ya think?