John Gatto's books and talks are all very insightful. His old website had the full text of The Underground History of American Education for free.

Archive.org crawled the site: https://web.archive.org/web/20260000000000*/johntaylorgatto.... (check the versions from maybe 10 years ago...)

IIRC he had a stroke, and finally passed away. Now https://JohnTaylorGatto.com redirects to his youtube channel.