The study investigates the relationship between self-efficacy, locus of control, and academic achievement among high school students in Chenaran, Iran, with a sample of 266 students. Results indicate a positive correlation between self-efficacy and academic achievements, while a negative relationship exists between locus of control and academic achievements, with self-efficacy being a stronger predictor. The findings suggest that students with higher self-efficacy are more likely to engage positively with challenging tasks, whereas those with a low sense of self-efficacy tend to perceive difficult tasks as threats.