Has anyone actually read the scientific I information coming out on this? Children are not infected and do not spread in the way adults do.
I have in large measure, and this really isn't certain. If @Sunshine1239 is referring to the child who was skiing in Contamines, it's only one child and it would be dangerous to extrapolate from his example to the wider population. The fact that he didn't infect any of a reasonably large number of contacts makes him an outlier by any standards, and why he didn't is no better understood than why Steve Walsh, who infected him, also infected 10+ other people when the R0 is considerably lower than 11. If s/he's referring to the government guidance, it would be as well to remember that that's a political document, not a scientific one.
I also disgree that the alert @KatieB55 mentions is insignificant. It challenges precisely this received wisdom going round that kids are not vulnerable, including kids with no underlying conditions. The HSJ alert also makes it clear that the newly observed syndrome is occurring (amongst others) in children who have apparently recovered from an otherwise unremarkable Covid infection, which may have implications for what (little) we know about the development of antibody. (The current tests are so inaccurate though, that it's hard to be sure about correlations either way.) There is nothing in the alert that says all the children are recovering/have recovered either, although that may be true for all I know. The numbers are small at the moment, agreed, but the number of Covid deaths was small once too and we all know where complacency about that led.
I disagree with @EdgarAllenCrow that this should not have been publicised. I feel the pandemic has gone well past the point where we can all expect individualised decisionmaking to be made on our behalf by professionals. People need the maximum available information to make tailored decisions for themselves and their families. For me, at least, that means no school for the foreseeable future, whatever's announced, whereas OP clearly feels differently. I doubt school will be compulsory for quite some time to come.