The CDC data was reviewed by him on this thread. This is perhaps the simplest summary:
https://twitter.com/tylerblack32/status/1470785676316663820?...
Edit: There is actually an interesting presentation of data on this and other school mental health impacts on a even more macro basis in the Urgency of Equity website data packet which tries to provide a scientifically backed set of recommendations for schools going forward on Covid. It is biased to taking more specific actions than the anti-vax/anti-mask crowd, and even the current Covid policies of many governments.