COVID-19 test positivity rate, state and city officials made good on promised measures to move all students still participating in in-class learning to remote schooling as buildings across the city are closed.“It’s a tough day, it was a tough decision,” lamented Mayor Bill de Blasio on Thursday.“We will bring our schools back, but we’re going to have to reset the equation.”The move, and the associated numbers, are enough to cause some on this side of the border to wonder why similar measures are not being taken in big Ontario cities cited has COVID-19 “hotspots.”New York City has a population of just under 8.4 million people with an average positivity rate hovering around three per cent.