We need schools and nurseries to reopen so our children can be properly educated and people can get back to work.
I think that the difficulty is in the way this suggests schools working normally.
We can open schools more fully than they are at the moment - for a few more pupils, a bit more of the time, with interruptions for cleaning / quarantine if a child or teacher is diagnosed with COVID.
This is not 'proper education'. Nor will it enable parents to go back to work normally. However, as part of a gradual relaxation once the virus is past its peak, yes, it is possible.
OR we can deliberately use schools re-opening as a planned means to infect more of the population - ie to create a new wave of infection but at a controlled time. So we could re-open schools 'riskily' - no social distancing, no reduced numbers, recognition that staffing levels will be low - but deliberately as part of an 'opening tap' to control flow of ill people into the NHS.