But Michael Mulgrew, the president of the city’s teachers’ union, said there are still roughly 6,000 teachers who will be barred from entering schools on Tuesday if they don’t get a shot over the weekend.
The teachers’ and the principals’ unions on Friday called on Mr. de Blasio to delay the implementation of the mandate until at least next weekend, so that schools have more time to plan for the shortages. Later on Friday, Mr. de Blasio resisted those calls during a radio appearance and said the city had “thousands” of substitutes ready to fill vacancies in schools next week.
Educators who refuse to be vaccinated will be able to take a year of unpaid leave and keep their health insurance until the end of the school year.
The city has said it will send vaccinated substitute teachers and central office staff into schools to cover shortages. But the most pressing challenges may not be in the classroom: Only about 80 percent of school staff, including aides, custodians, safety agents and school lunch helpers, have received at least one dose.
In many schools, almost all adults are vaccinated. But in others, there are between 30 and 100 teachers and staff members who have not yet received a vaccine dose, according to Mark Cannizzaro, who runs the city’s principals’ union.