reference, btw...upon a cursory review they talk about using masks, having adequate ventilation, teacher vaccinations, etc...doesn't read like a guideline for closures.
Is it inappropriate for the CDC to seek opinions from the people who are going to be working in those buildings?...and maybe actually taking those comments into account as they develop those guidelines?
If you've done more study on this than I have (which isn't much, I confess) then help me understand the problems that have been created...I am aware of the the concerns that many teachers and administrators have - especially the older ones - about being in close proximity to bunches of potentially COVID-infected "rug rats" all day, but your MIT study definitely shows that with adequate ventilation, vaccinated teachers, and relatively low indoor activity levels, there should be no problem opening up schools...per the CDC. If some teacher unions still object, it's on them and not the CDC.
Again, I haven't done a "deep dive" on this and am open to further info from you.
Link: https://www.cdc.gov/coronavirus/2019-ncov/community/schools-childcare/index.html