This study determined the best fit model of grit among senior high school students. This quantitative study was conducted in ten divisions which involved 380 senior high school students in the public schools in Region XI. The study utilized the descriptive causal research design. The statistical used were mean, standard deviation, Pearson r, multiple regression analysis and structural equation modeling. The findings revealed that cultural intelligence was the best predictor of grit. With cultural intelligence as the predictor and grit as the outcome, it showed a significant influence with a beta of .36. The influence of social intelligence was found to be significant with a p-value that was less than 0.05 and positive standardized beta value of .093. This means that for every unit increase in the cultural intelligence of students, there was a corresponding increase in grit experience of students by .093. The best fit model was hypothesized model 5 that fits well with the data and therefore asserted as a good fit model of grit. This implies that students who possess the cultural intelligence with the attributes of proper motivation, strategy, right behavior, and outstanding knowledge can overcome any challenges in their lives.
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