 Education was transformed.Under Lenin, the education system allowed relaxed discipline in schools that became based upon Marxist theory, but Stalin reversed this in 1934 with a conservative approach taken with the reintroduction of formal learning, the use of examinations and grades, the assertion of full authority of the teacher and the introduction of school uniforms.Art and culture became strictly regulated under the principles of socialist realism and Russian traditions that Stalin admired were allowed to continue.