Method: This study is of semi-experimental type and practical in goal. The population of the study consisted of all seventh-grade female high school students in Farahan city in the academic year of 1399-1400 SH. One school was randomly selected from the female junior high schools of Farahan city and two classes were randomly selected from the seventh-grade classes of this school. The number of students in both classes was 30 and these two classes were randomly divided into experimental and control groups. The pre-test/ post-test design with control group was used. The data collection tool was Sherer general self-efficacy scale with a reliability of 0.85. Finding: Research data were analyzed at two levels of descriptive and inferential statistics. The findings showed a meaningful difference in post-test scores between two groups, and the experimental group had a higher level of self-efficacy (p<0.001). ETA coefficient indicates that 42.8% increase in self-efficacy of the participants in the experimental group can be attributed to the teaching of thematic memorization of the Holy Quran.
Conclusion: As a result, it can be said that the memorization of divine verses and familiarity with the Holy Quran increases the level of self-efficacy of students, and it is suggested to insert the thematic memorization of the Holy Quran in the school curriculum.