There is a lot of turnover among teachers. The union is just trying to get some mileage out of it.
I see teachers reacting to this in other states, but I don’t expect any resignations here in NJ; our teachers make enormous sums of money, have great benefits (including retirement), and are held to no standard at all.
Paterson NJ was just in the news because they had 19 seniors ready to enter college. NINETEEN - and it is a big urban district with a huge price tag and teachers drawing combat pay. An acquaintance that works in Jersey City commutes about fifty miles each way from western NJ; you don’t do that unless you are making a LOT of money at an easy job.