What were the major effects of the Cultural Revolution?

Teachers were challenged and attacked by students.

All ranks in the PLA were abolished.

Central government's control and ability to pass & enforce laws was seriously weakened.

The Revolution marked Mao's return to the central position of power in China after a period of less radical leadership to recover from the failures of the Great Leap Forward, which led to approximately 30 million deaths in the Great Chinese Famine only five years earlier.