The study ?Assessment of the Implementation of Physical and Health Education Curriculum in Junior Secondary Schools in Katsina State? was aimed to assessing the implementation of the Physical and Health Education Curriculum in Katsina State?. This is based on the assumptions that there exist some vacuum in the implementation process as a result of some local peculiarities, which is reflected in the yearly result of students at junior secondary school examination. The basic objectives of the study includes to ascertain whether differences exist in the implementation of Physical and Health Education Curriculum in selected JSS in Katsina state, to determine the perceptions of school administrators, teachers and students on the implementation of the PHE curriculum. The data collected were analyzed using descriptive statistics of frequency, mean and standard deviation, the chi-square statistics was used to test research hypotheses at 0.05 level of significance. The entire four hypotheses were rejected. Therefore, it means that due to many factors the Physical and Health Education Curriculum Implementation has some degree of variations. In conclusion, the study believed that the Physical and Health Education curriculum is not well implemented as stipulated. The study recommended that state ministry of education should mandate its inspectorate divisions and zonal offices to enforce proper implementation of the curriculum. Inspectors and supervisors should be at watch on the subject issue and should be straighten to be taught by qualified teachers, adequate facilities and materials should be made available to all junior secondary schools in the states. Based on this study, it is suggested that State Ministry of Education should encourage seminar and conferences for Stakeholders, Administrators and Teachers on the topic of this work, so as to unified effective implementation of Physical and Health Education Curriculum at all junior secondary school level.