This research was aimed to know the influence of Cooperative Script learning towards students’ mathematical creative thinking ability and to know the influence of Cooperative Script learning towards students’ self efficacy. Experiment was used as the method of the research. The population were the 7th grade students of Junior High School 4 Jatibarang, taken from 7 classes. Cluster random sampling technique was used in this research, with class 7 E as the experimental group which was given treatment using Cooperative Script learning and class 7 F as the control group which used Conventional Learning. The instruments used were mathematical creative thinking ability post test questions and questionnaires about self efficacy. Based on the result of T-test analysis of the mathematical creative thinking ability post test data using SPSS 22.0, the significance value obtained was 0.045 with the value = 0.05, meaning that the significance value < which means H0 was rejected. It means that the students’ mathematical creative thinking ability of the students who joined Cooperative Script learning was better than those students who joined conventional learning. It can be concluded that Cooperative Script learning influenced students’ mathematical creative thinking ability. Then, the result of T-test analysis of self efficacy questionnaire data using SPSS 22.0 showed the significance value = 0.021 with the value = 0.05. Hence, the significance value < which means that H0 was rejected. It means that the students’ self-efficacy who joined cooperative script learning was better than those students who joined conventional learning. Thus, it can also be concluded that Cooperative Script learning influenced students’ self efficacy.