Chongning is the reign title of the period from 1102-1104. The Three Hall System was an effort to put a considerable part of the educational system under state control. Schools were divided into three grades, or halls. Promotion between grades and between schools was done mostly on the basis of uniform examinations. Some students advanced, from county to prefecture and then to the National University, solely due to their exceptional virtue. Cheating and financial woes undermined the system, however, and the government abolished it in 1121.