This study aims to determine the improvement of PAI learning achievement through STAD type cooperative learning in class XII science 1 students of SMA Negeri 1 Sakra in 2019/2020 Academic Year. This Classroom Action Research is carried out by implementing Jigsaw type cooperative learning in order to improve the quality of the learning process that helps teachers carry out PAI learning activities taught by maximizing the active role of students, especially the knowledge they have and how they are applied in daily life. This Classroom Action Research (CAR) was carried out in 2 cycles, and the results of the actions that have been carried out have been proven to be able to improve student learning outcomes / achievements in terms of classical student mastery learning in the first cycle by 73%, which could increase to 97% in the cycle II and in terms of the average value of evaluation results 71 in the second cycle of 80, this means there is an increase of 10%. From the results of this class action research also showed an increase in the level of student learning activities from 3 categories Active Enough in the first cycle to 3.6 Active categories, Active categories in the second cycle to 4.1 Very Active categories.