The study is titled "Assessment of school mapping on allocation of school facilities in secondary schools in Kaduna State, Nigeria. The study was guided by five objectives, five research questions and five corresponding null hypotheses. The design of the study is descriptive survey design.The study‟s population consisted of principals, teachers and supervisors numbering 10,931 comprising of 541 principals, 10,294 teachers and 96 supervisors from twelve (12) educational zone in Kaduna State.Purposive sampling technique was used.The sample size used in the study was 378 which consisted of 40 Principals, 326 Teachers and 12 Supervisors.Self-developed structured questionnaire titled "Assessment of school Mapping on Allocation of School Facilities in Secondary Schools in Kaduna State,Nigeria" was usedas instrument for data collection.The instrument was duly validated by supervisors and statisticians for content and construct validity.The instrument was pilot tested and the reliability coefficient index power stood at 0.7 using Pearson Product Moment Correlation coefficient. Analysis of Variance (ANOVA) was used as instrument for data analysis. The study among others found that school mapping created a balance in the establishment of new secondary schools in Kaduna State.In the light of the foregoing, some recommendations were proffered which includethe need for Kaduna State Government to ensure existing tempo of school mapping maintained and improve upon in secondary schools, this will ensure that schools are distributed according to need specification.