Scientific studies from all over have shown that those with kids in school are significantly LESS liable to get it than those without.
This is flatly and completely NOT TRUE (hi Gav). In a kind of 'the grass is blue / earth is flat' kind of way to be fair, but still worth pointing out.
Here are some articles citing scientific studies suggesting the opposite
www.health.harvard.edu/diseases-and-conditions/coronavirus-outbreak-and-kids
www.healthline.com/health-news/kids-are-getting-covid-19-at-school-and-spreading-it-to-families
www.medpagetoday.com/infectiousdisease/covid19/88574
science.sciencemag.org/content/370/6517/691.full
www.medicalnewstoday.com/articles/covid-19-outbreak-at-a-kids-summer-camp-may-be-stark-warning#Virus-spreads-to-over-40%-of-attendees
I mean, I have LOADS more, I can keep on with this all day. I've been monitoring the literature.
My take from what I've read is this - children under 10-12 (puberty basically) do seem to have a likelihood of catching and spreading it less than those over 10-12 (who have the same rates if not higher than adults) if exhibiting the same behaviours / in exactly the same situation. However as we all know on MN under 10s don't exhibit the same behaviours (especially little ones, my 4 year old likes to come and sleep on top of me for example), so unsurprisingly there are studies that show that this lower risk is outweighed by more close contact behaviour of younger children (so they're less at risk but have higher exposure basically - same true for transmitting to adults).
Based on what I've read, my 11 year old is more likely to catch from a classmate, but if my 4 year old gets it I'm more likely to be fucked because she NEEDS a lot of close contact which = high exposure to me. (Whereas my 11 year old could reasonably isolate in her room)
This is particularly important in the UK where primary schools still don't have any masking or social distancing.
Those in charge have fuck all idea of how normal parents behave or what is adequate parenting, seemingly, in that they have advised social distancing from children. Well to do so from any kids under 7 would be at the very least cruel, and under 5s dangerous.
Many studies, it should be noted, in schools are in countries who are applying the gold standard covid controls - i.e. classes are small sizes, social distanced, well ventilated and masked. In secondaries we mostly only have one out of those 4 (and only recently, we didn't in Sept-December) and in primaries we often have none - ventilation is the only option if the schools aren't going against DfE advice, so a maximum 1 out of 4 protections available pretty much everywhere else in society.
There are also, sadly, quite a few MN threads of families catching covid from their kids. e.g. www.mumsnet.com/Talk/coronavirus/4199702-I-need-a-hand-hold-in-shock-after-positive-Covid-test