I don't know if I mentioned this at the time on FOFC, but this is a fairly comprehensive analysis of the cost of remote/hybrid instruction the first two years of COVID closures on schoolkids, particularly those in high-poverty areas.
https://cepr.harvard.edu/files/cepr/...f?m=1651690491
I saw it referenced again in the Twitter Files report on censorship of discussion of COVID, which I also think is a good read.
How Twitter Rigged the Covid Debate
Spoiler Alert: it didn't necessarily start with the Biden administration.