Admissions of mistakes related to Covid-19 responses are as rare as honest vote counts in Democrat-run cities. From Jeffrey Tucker at aier.org:
On March 12, 2020, the memo went out from the pen of Carter Mecher, bioterrorism expert at advising the Veterans Administration. It went out to public health officials and others from around the nation. Close the schools. Pull the trigger now. And it happened, and with it, civic freedoms we have long taken for granted – freedom to travel, operate businesses, go to the movies, even leave our homes – were taken away.
They shut the schools. Then it was like dominos falling, one by one. The businesses had to close so that people could watch the kids at home. The shopping centers had to close because otherwise the kids would just gather there. The churches too. Entertainment venues were shut. Even parks closed. The stay-at-home orders followed from the school closures. In many ways, the whole legitimacy of lockdown hinged on the merit of the school closure.
A small group of pro-lockdown scientists cheered, as their decade-and-a-half-old dream of conducting such a social experiment was finally becoming a reality.
The school closures had a disproportionate effect on working women. They left their jobs to care for the kids, attempting to help them navigate the strange new world of Zoom classrooms and do assignments via email. Men stayed working in jobs as the primary breadwinners.

Related – there seems to be an agenda to exploit lockdown to do away with external exams, leaving only teacher assessment. Attacking meritocracy? Teachers can be relied on to make sure the right children succeed and the right children fail?