The purpose of this study was to present a causal model of rumination relationships with exam preparation with the mediating role of mindfulness and academic disinterest in students. The statistical population of this study consisted of second high school students of Shiraz who were randomly selected from the four districts of the four districts and were selected by the relative stratified sampling method and the Krejcie and Morgan sample size of 361 students. Solomon and Ruth Bloom's (1984) academic work, Hoxma's and Morrow's (1991) rumination, the Freiburg Mindfulness (FMI-SF) short form 14-question and school burnout Salmella-Arrow et al. (2009) were used. The results showed that rumination had a direct and positive effect on academic disinterest and academic disinterest on exam preparation, and rumination had a direct and negative effect on mindfulness, mindfulness, and cognitive flexibility. Comparing the two groups of girls and boys also showed that in the girls' model, the effect of rumination on mindfulness and academic disinterest was also greater than the effect of mindfulness on disinterest and preparing for exam than boys and the effect of academic disinterest on preparing for The exam was the same for the boys and girls. The results generally indicated that mindfulness had a direct and negative impact on exam preparation, rumination, and academic disinterest.
