I think it's a bit premature. We need to look at the big picture. You do this too early and schools may be closed for ages as the virus continues to spread. The students doing major exams will have their education severely disrupted. Not all parents are comfortable with home schooling. Kids will inevitably end up out and interacting with other kids if the virus is not seen as that serious, so parents will just let them play out and interact and spread the virus anyway. If school is closed in isolated cases, or when the numbers are really significant and the deaths are much higher, isolation will probably mean isolation for a lot of people as the reality of what this virus is will hit home.
It will have a huge affect on the economy and services as both the frontline and emergency services support staff who have kids need to stay home, and what about the delivery drivers who will drop these so called emergency parcels off, refuse collectors etc. One sure fire way to spread disease is to have a shit ton or rubbish uncollected on our streets.
What about the parents who just get SSP and their kids get their only decent meal of the day at school? Like it or not school IS much needed childcare as well as an education for some people. We don't all have a husband or wife with a six figure salary or rich parents who allow us to be a SAHP.
I understand this situation is scary, and it does seem school closures are inevitable but the timing really needs to be right. I think in about two weeks it could be a reality, but for now it would be too damaging and will severely piss the nation off and send some families in to the red.
What we should be asking is why our society and economy so fragile in the first place that we can't cope with the closure of schools for a couple of weeks. Years ago this wouldn't have been an issue. Why is the economic impact on both families and seemingly stable businesses so catastrophic? They are all in debt and keep getting in more debt to stay afloat and the things that really matter in life are getting more expensive. If it weren't for that, we could have all shut everything down at the first whiff of the virus and it would probably be over now.