If public schools are liberal indoctrination, why don't students know about private sector unions in the1900s?

they dont teach history in general in school anymore they tell u george washington was the first president when in reality he was the fourth they dont tell u about andrew jackson trying to be assinated by the rothschilds after he ended the central bank or why arron burr shot hamilton they also feed kids flouride to keep down iqs and make them docile it isnt because reagan broke the unions its because of unfair trade with china