Of course there are lots of things to criticise them for but I can see why they didn't close the schools earlier. By keeping them open they have facilitated lots of people working & carrying on with their regular routines. I think they wanted to keep going till Easter but staff shortages have made that impossible.
I work short days & my 2 kids are still in school. Everyday this week the park, coffee shops, streets have got a lot busier that usual. Once the schools are closed & some parents have to stop working or change their pattern to facilitate this a lockdown to prevent further social mixing is surely inevitable? I don't think there would have been the appetite for this 2 weeks ago & behaviourally you have to want people to do it.