The goal of this study was to investigate the effect of educating philosophy curriculum in the children on the spiritual development of female students with 12-14 years old in the city of Isfahan. The present study is a semi-experiment research. The research design is pretest-posttest research with experiment and control group. In order to select the sample members, cluster sampling method was used. For this purpose, the curriculum was conducted for 15 sessions in the experiment group. The curriculum was conducted two times in week. The research data were analyzed through multi-variable COVARIANCE Analysis in the SPSS. The findings of this study revealed that implementation of philosophy curriculum education program leads to spiritual development of students in terms of God awareness, grandiosity, and instability (p=0.05). Also our findings indicated that implementation of philosophy curriculum does not affect spiritual development of students in terms of impression management and realistic acceptance (p=0.05). Based on the results of this study, it can be said that implementation of philosophy curriculum leads to the spiritual development of students.