I don't think it's dramatic. Children that are currently considered vulnerable are meant to have school places. But the authorities don't even know about every vulnerable child. If I'd been stuck in a house 24/7 for weeks with my parents as a child I can truthfully say I'd have taken the only option out.
We also need to remember all the dc with normal, loving families that will soon be vulnerable, at least in my eyes. Dc that will lose loved ones either early or when it was avoidable because vital treatment wasn't available for other conditions & community support wasn't available. Dc that will face homelessness, and then continue in the cycle as adults because the economy was fucked and there aren't any jobs. Dc with mh problems and sn that will struggle far more shut away than others.
It's mainly those of us at least risk from coronavirus that will be paying the economic price to keep an older, statistically speaking wealthier generation safe. And our youth, already fucked as far as housing, job security and pensions go will pay the highest price for the future economic fallout we already face.
It won't be a popular opinion I'm sure, but if we're going to demand the younger generation sacrifice their homes and livelihood, and in some cases mental health to keep the older generation safe, pensioner wealth should be used to at least level it.