The study aimed at early marriages and girl child education in secondary schools; a case study of bwambara secondary school rukungiri district and it was guided by the folowing objectives; To identify the different causes of early marriages to the students of Bwambara Secondary School, to examine the educational effect of early marriage on Girl Child Education and to identify the different ways how early marriages eliminated in Secondary Schools. This study employed the survey design. This is because it is targeting a big population and size of sample of respondents. The population from which the sample was taken involves the students, Teachers and parents of Bwambara Secondary School. The respondents were got from various classes and different departments at the School.in order to come up with accurate data to help the researcher get all that is needed. This population was total to 320 participants. The target was on 200Students, 70 Teachers and 50 Parents of Bwambara Secondary School using stratified sampling technique because it is the most effective when handling heterogeneous population’s parameters to be obtained like this one, and enables separate estimates of the populations of the parameters to be obtained for each stratum without additional sampling. From the findings, 176 (90%) of the respondents strongly agreed that teen mothers are very likely to drop out of school because of their low ambitions and dedication to getting an education, while 20 (10%) of the respondents agreed that teen mothers are very likely to drop out of school because of their low ambitions and dedication to getting an education; implying that indeed teen mothers are very likely to drop out of school because of their low ambitions and dedication to getting an education. The researcher recommends that girl child education should be prioritized by all stakeholders