Well...they obviously didn’t use their textbooks...plus aren’t textbooks full of propaganda these days anyway?
Exactly. Burning most textbooks published in the last 50 years or so is doing a service to education.
You do need updates in science and history, but the best textbooks are from the early to mid 1800s.
Read, "Why Johnnie Can't Read", by Rudolph Flesch, from the 1950's or so.
Then read his sequel, from the 1970s or so, "Why Johnnie STILL Can't Read".