Remember the good old days, when the issue of reopening schools to full-time, in-class instruction was about COVID? It’s not about helping people avoid contracting the novel coronavirus any longer.

Now it’s about saving them from . . . mold. And asthma. And other conditions that have nothing whatever to do with COVID and everything to do with coming up with reasons why schools should remain closed until teachers unions decide it’s all right for their members to go back to doing what teachers have done since the days of ancient Athens — instruct their charges in person. Face to face.

Professional education journalists and Democratic politicians shift the goalposts daily, to make it harder and more complicated, not easier, to get kids back in a classroom with a teacher in front of them.