imo the UK should also be reopening now in stages, including schools as an enabler for parents to work
What is odd though is the choice of school years to reopen:
Here, first classes to come back to school were all old enough to socially distance:
the final year at primary school
plus those at secondary school with important exams in the next couple of years
That enabled schools to get used to social distancing and tweak where necessary.
Other years have since rotated in, so all pupils will have attended school at some time,
before breaking up at the end of June as usual for the summer vacation
Kindergarten, nurseries and other childcare are opening from about 2 June here,
so all parents should soon be able to work ft again
Holiday childcare should be open for all kids
and schools are expected to reopen full-time after the vacation, for all pupils