Do you have any evidence of ignored cost-benefit studies that were available at lockdown decision time (there wasn’t much time for studies when these decisions needed to be made)?
Getting that estimate wrong is not the same as failing to consider it.
Cost is incurred by the children who have no voice, so zero cost to decision makers. Benefit is to one of the largest donor groups to politicians, so also large benefit to decision makers. Cost/benefit to society, population at large, the country? Seems to be willfully ignored.
Many of the studies referenced in that article are from 2020, yet schools had not re-opened.
In addition to that the teachers union in the US influenced guidance by the CDC on school openings: https://nypost.com/2021/05/01/teachers-union-collaborated-wi...