And this:
Education in Communist Russia
Also in the late 1920s and 1930s, Russia encouraged
liberal teaching methods. The Soviet Unions Communist leaders realized the liberal curricula were designed to promote the growth of the individual.
Stalin then exercised rigid control over textbooks, curricula, and teaching methods. Schools stressed obedience, industriousness, and loyalty; and they taught just facts. All schools taught the same things in the same way by stressing mathematics, science and technology.
Stalin used the schools effectively to shape "the new Soviet man," who thought and acted as instructed by the Party.