Should Covid-19 vaccinations be mandatory for teachers in the government schools???

No, that is the prerogative of the individual teacher's judgment and conscience.

When you say "government schools" you sound like a trumplandian.  Do you mean "public schools?"   Now I've forgotten the question. 

if I was still a parent, I'd sure what them to be mandatory unless contra indicated by physician [no exceptions for religious beliefs or anything like that].

No, vaccinations ought to be voluntary. However, I think it would be foolish for a teacher not to get vaccinated as they are being thrown into a vat of disease every time they enter the classroom. 

I'm thinking we are heading in that sort of direction. The vaccination card is now being required to travel to some states. As more become vaccinated, that card will be required more and more. May even end up mandatory for just whatever in town.

if that's what it takes to get their lazy a$$es back into the classroom.