The Current research aims to make a comparative study a bout the effect of religious summer school held in mosques on the recitation of third and fourth graders of the texts of Islamic Education . Limits of the research were third and fourth graders pupils in four schools ( two for males and tow for females ) for the academic year ( 2012 – 2013 ) . Al-Firdous and Om AL.Qura mosques in AL-Kafaat AL thaniya quartery . Each mosque held two sessions of the religious course one for males and the other for females . Sample was ( 400 ) pupils . The researcher made a recitation test of quranic verses in their syllabus . to verify it , the test was shown to a pannal of experts to know its surface reliability . Correction stability factor was found using ( Peason conjunction factor ) due to the possibility of error in estimating degrees in tests by having a Correcting a Correcter for two times in a raw . The Pearson conjunction factor for dual orrection ( 0.97 ) and the stability of two independent correctors In addition to a professional correcting person in this field reached ( 0.88 ) indicating a high stability test . later , data were statistically analyzed and the results showed statistic cally Significant difference at the level for ( 0.05 ) between test degrees for the pupils in first and second hypotheses of third and fourth graders and in favor of the pupils who participated in religious course . No statistically significant differences were found between groups in third and fourth hypotheses related to sex variable .Given the previous resuits , the researcher made some recommendations like : teachers urge their students at the end of the academic year to enroll in religious courses held in mosques . As a completion , the researcher suggested initiating a study to know the effect of religious Courses on behavioral and moral aspects of the pupils.