This study aims to examine the reading scores of a second-grade class in a public school and their relationship to student self-efficacy. Given the importance of students' self-efficacy in reading test results, this study uses a mixed-methods approach. Samples were taken using a purposive sampling technique with one class consisting of thirty-four students who participated in this study. In this study, data were collected from a self-efficacy scale and reading test. To see the relationship between self-efficacy and student reading tests, the authors conducted a Pearson simple correlation test. From the result of the Pearson simple correlation formula, the findings show that there is very close parallelism between students' self-efficacy and reading tests. This current study indicates that higher students' self-efficacy will actively enhance the quality of teaching-learning activity. One of which is by giving encouragement and constructive feedback to the students continuously. However, it also has some limitations in terms of length of study and data collection. First, after knowing that self-efficacy has a close correlation with student reading results, then further research in implementing ways to improve student self-efficacy will be beneficial to improve student self-efficacy. Second, the study results found that there are students who are at a low level of self-efficacy. Thus, further research can be conducted by collecting other research data such as questionnaires or interviews to explore the factors that cause their low self-efficacy and then look for efforts to improve it.