Abstract: With the help of data mining for education and examination data, education management and decision can be made scientifically.Based on the analysis of the education and examination data, a framework of education and examination data mining system was proposed.Algorithm Apriori was applied to the association rule mining in finding the relationship among the grades of the different subjects of the college entrance examination.The association rules mined shows that the grades of different subjects have close relationships, and the minimized support thresholds for all rules are larger than 75%.