Teachers in N.J. district told not to keep windows wide open to stay safe from COVID Updated Feb 04, 2021; Posted Feb 04, 2021 Teachers in the Upper Freehold Regional School District, where the temperature in one classroom was said to have dropped to 45 degrees recently, were told they did not have to keep their classroom windows open all the way in order to enhance ventilation. Windows were open at the Blessed Sacrament Schoolin Staten Island last Fall. Facebook Share At a time when disagreements between school districts and teachers unions seem even more common than usual thanks to the coronavirus pandemic, the Upper Freehold Regional School District and its union are in agreement on how to address plummeting classroom temperatures while still remaining safe: remind teachers they don’t have to keep their windows open all the way.