《明史·志·卷四十五》
洪武二十五年，规定府学每年选贡二人，州学二年选贡三人，县学每年选贡一人。
二十五年，定府学岁二人，州学二岁三人，县学岁一人。
In the twenty-fifth year of Hongwu, it was stipulated that two people would be selected from the prefecture school every year, three people would be selected from the state school every two years, and one person would be selected from the county school every year.