During the early Heian period, Myogyodo separated into the two schools called "Sanraigaku" and "Sandengaku" and debates took place between them; the arguments stagnated after the middle of the Heian period, however, once Myogyodo itself came to have the characteristics of a training course for becoming a professional on Confucianism.
平安時代初期には三礼学派・三伝学派という流れが成立して両者の間で論争が行われたが、平安時代中期以降は明経道そのものが儒教の専門家養成コースのような性格を持つようになって学術論争が沈滞していった。