The research aimed to study the possibility of predicting academic optimism from school climate and organizational citizenship behavior, as well as to recognize the level of academic optimism for teachers, in addition to recognize differences attributed to gender, and academic stage in academic optimism, as well as to recognize the relationship between academic optimism and both of school climate and organizational citizenship behavior. The research sample consists of (288) male and female teachers, The researcher prepared academic optimism’s scale, school climate’s scale, and organizational citizenship behavior’s scale, By using "the Averages", "Independent Sample T-Test", "One- Way ANOVA, "Person correlation coefficient", and "Multiple Regression Analysis", The research found that the level of academic optimism for teachers was average, but there were no differences in gender, and academic stage in academic optimism, it found also there were positive relationship between academic optimism and both of school climate and organizational citizenship behavior, academic optimism can be predicted from school climate and organizational citizenship behavior.