This study titled ―Assessment of the Implementation of Christian Religious Knowledge Curriculum in Junior Secondary Schools in Kaduna state‖ examined the extent to which the curriculum has been implemented and its impact on the academic and moral growth of students. It as well examined the influence of teachers and environment on the implantation of the curriculum. The study was borne out of the growing perceptions which attributed students‘ failure in external examinations and decline in morality among the youths to in-effective implementation of religious curriculum in secondary schools across the country. Survey research method was adopted in the study. The population of the study was made up of all Junior Secondary School teachers in Kaduna State. The State has a total of three thousand one hundred and five (3105) JSS teachers out of which three hundred and fifteen (315), representing 10% of the total population, were selected for the study using random sampling method. Three hundred and twelve (312) copies of returned questionnaire were validated and used for the analysis of result accordingly. The data were analyzed using frequencies, percentages, mean and chi square. The results revealed that the level of the implementation of CRK curriculum in JSS in Kaduna State was satisfactory and that the extent of the implementation of the curriculum has had considerable impact on the academic and moral growth of students. Teachers are indispensible in curriculum implementation, and environmental factors are also strong determinants for effective curriculum implementation. In view of these findings, it has been recommended that regular supervision should be maintained to guide and encourage young and in-experienced teachers. Recruitment of teachers should be based on professional qualifications and provision be made for in-service and workshops should be organised to keep the old teachers up-to-date. In addition, efforts toward making the school environment conducive for learning should be given top priority.