I looked into the letter writer. Not a crackpot; also not a hysterical letter. The district was Oak Grove, Santa Ross California. The consultancy, which apparently has other clients in in the county, is On the Margins, When all of this happened, I went to their website and found a resources pull-down menu, which, when I searched for "CRT," contained seven references to CRT and some pretty objectional (to me) language: White people have been "hoarding" the good jobs" was one example. When I went back today to get you a link, however, I couldn't find that particular page. It's possible that it was cleaned up a bit due to negative publicity. Looking at the rest of their web page, there is a lot that is just fine, and some available presentations that definitely would not be good for kids--though I don't know If they are presented to kids. As to what teachers actually taught, "through a CRT lens," I don't know.