The purpose of this research is to know that teaching used cooperative learning jigsaw type is more effective than conventional mode in learning achievement on accounting for the students at SMAN 2 Karanganyar. The research use experiment method with matched group design way. The population of this research is the students of XI Social Class at SMA Negeri 2 Karanganyar. About data collection, in the first skill is used documentation technique. It means taken from the value of sub competence before. The researcher used objective test to measure the students learning achievement. In this research using analize teqnique statistic t-test. Based on the result of the research found the value of Me = 85,057 and Mk = 76,800. Based on account that have been done used t-test found tcount value about 4,715 and ttable value about 1,998, in signifikan step 5% and db = 67. It means that experiment group having average last score rather than control group. Based on the analize, it can be concluded that the hypothesis which states “Cooperative learning jigsaw type is more effective than conventional mode in learning achievement on accounting at SMA Negeri 2 Karanganyar” is validated and accepted.