This study aims to determine the improvement of learning outcomes by using the based learning model in class IV of SDN 101802 Namorambe. This study used the Classroom Action Research (CAR) method, the population of this study were Catholic students in class III of SDN 101802 Namorambe totaling 8 students consisting of 4 males and 4 females. Sampling using purposive sampling and the sample used was class III totaling 8 students. The results of this study indicate that student learning outcomes using the based learning model are included in the very good category seen that the average post-test score of the best students at the cycle I stage was 65,6 then increased to 86,5 in the post-test cycle II and the smallest students at the Cycle 1 stage were 50 then increased to 79. This shows that there is a significant positive influence of the use of based learning on student learning outcomes in the subject of Catholic Religious Education in class III of SDN 101802 Namorambe.