Abstract: In order to improve the level of computer grade examinations of students in sports colleges and universities，Weka software and Apriori are used to do data mining on the data including the courses of computer basic one and basic two with students′ usually test scores and usually test times，the results in the final exam，computer grade test scores of some classes in Chengdu Sport Institute，thus some beneficial analysis results are obtained to improve the teaching effect of computer basic course.

Key words: data mining, Apriori algorithm, Weka, sports colleges and universities, association rules, performance analysis