The present study aimed to examine the psychometric properties of the Growth Mindset Scale, including its reliability, validity, and factor structure. The population of this study included all students aged 15 to 30 in Zanjan in the academic year 2024-2025. Given the uncertainty of the exact population size, the sample size was estimated to be 384 people using the Cochran formula for uncertain populations with an error level of 0.05. Considering the possibility of some participants not responding, questionnaires were distributed among 420 people in the target group. data from 372 people were included in the final analysis. The multidimensional student enthusiasm Scale (SES) was used to calculate the convergent validity. The construct validity was examined through confirmatory factor analysis. Reliability was determined by Cronbach's alpha method and test-retest and data analysis were performed with SPSS-27, Lisrel-10.2, and JASP software. The results of confirmatory factor analysis confirmed a growth mindset factor, similar to the original form. The model fit indices were generally reported to be favorable. Also, the Cronbach's alpha coefficient for the entire scale was 0.82. In addition, the test-retest coefficient was 0.87 with a two-week interval for the entire questionnaire. Also, the correlation coefficients (0.33) were significant at an error level of less than 0.01, indicating the desirable convergent validity of the scale. Content validity was also calculated with CVR and CVI indices of more than 0.8 and 0.9. Overall, the findings indicate that the Growth Mindset scale is a reliable and valid tool for assessing students’ growth mindset, providing a robust instrument for learning.