You only need to look at the relative furore over masks in schools in the UK to realise that two years of this shit will be deeply damaging all round.
Keeping schools open and functioning well should be the #2 priority, only trumped by keeping the health service functional for vaccinated (and the 0.1% allergic) patients' covid complications, and other medical emergencies.
This place has it so so so wrong... even if zero covid is the aim, authoritarian government ought to be able to take the long view (and damage the economy first) more easily than a democracy. Clearly they are so far in the pockets of the tycoons that they don't care one bit.
"During the period of face-to-face class suspension, schools should remain open to look after students who do not have carers to take care of them at home. Schools will arrange for staff to be on duty to handle school affairs and answer parents' enquiries."