They are playing chicken with the unions.
They are waiting to see how many schools will close and what local councils might do.
Legal liability might force councils hands before the government as they are the direct employers of teachers.
If Labour councils start to support unions we may see a domino effect.
But the government won't do anything now until they are forced to. That might come as early as tomorrow afternoon or even after the schools go back on Monday. (Unlucky if your school hasn't got an inset day)
I personally think its all a load of posturing because as soon as the schools do go back the number of cases will start to skyrocket again, and the government's current position will be untenable within a fortnight. The 'baked in' projections are already suggesting a complete overwhelming of the NHS by 12th Jan. Crucially hospitalisations have a lag behind cases - and cases are yet to peak...
In the meantime its dumped on teachers and risks local communities in a way thats unnecessary.
Whats going to happen with cases is predictable, and we know the new strain is already across the country, so its just all making a bad situation worse.
Its not what anyone wants to do. But its an inevitability. Its not an if its a when.