RESUMEN
This study investigated the relationship between NEO personality factors with happiness in the Mobarekeh city high school students. For this purpose, correlation design study, 120 students from first year to pre-university from high school [in base 30] from Mobarekeh city, were selected by combination of cluster and stratify sampling and responded to inventory of the Oxford happiness [alpha=0.91] and the NEO-FFI personality questionnaire [alpha=0.81]. Data analysis by Pearson correlation coefficient indicated between the components of conscientious, agreeableness, extraversion, there is a positive correlation with happiness levels. These components, respectively, at 0.0001, 0.0001 and 0.001 were significant. Between neuroticism and openness there was not a correlation with happiness levels. The results indicate that by programming for education and thriving components of conscientious, agreeableness and extraversion we can increase happiness in this age group