The rows of bolted desks, rote drills and Three Rs of the American classroom were engineered over about a century. The design drew on a Prussian template, Horace Mann's European tour, the first age-graded school, and administrators who called schools factories. A Soviet satellite in 1957 first made the system's makers admit it might need to change.
Historians dispute how literally Mann and Cubberley meant their words, and whether Prussian influence is overstated as a plot to produce obedient workers. Dewey's real influence versus Thorndike's, and the claim to "first graded school," are also argued.


