Mwaniki, Wilson2026-04-242026-04-242023-03https://ir-library.ku.ac.ke/handle/123456789/32961A Thesis Submitted ‘in Partial Fulfillment of Tite Requirements of, the award of the degree of Doctor of philosophy (Economy of education And educational plaiining) in the school of Education and Lifelong Learning Of kenyatta UniversitySchool inputs are crucial in ensuring that secondary public schools deliver high quality education. Unfortunately, Murang'a County's secondary education is of low quality, with many students scoring poorly on the Kenya Certificate of Secondary Education (KCSE), on top of having insufficient performance in extracurricular activities and low retention and completion. Thus, this study endeavored to evaluate the extent to which school inputs determine education quality in govemment-sponsored secondary schools in Murang'a County, kenya. The intentions of this examination involved: to scrutinize the magnitude of influence that adequacy of instructional resources has on educational quality in government-sponsored secondary schools; to establish the impact that school facilities have on education quality in public secondary schools, and to assess the extent to which staffrng levels affect the educational quality in public secondary schools.The Education Production Function Theory anchored the study. The study.design used in the research was correlational. A sample of 360 participants (10.3%) from the 3498 participants in this study (292 prncipals and 3206 teachers) were selected. This sample was computed using Yamane's Formula. Eight strata that took into account sub-counties were formed using stratified sampling. Intentional sampling was used to choose three principals from each sub-county. To minimize prejudice, however, 42 instructors (14 teachers from each school) were chosen at random from each sub-county. While the researcher employed a documentary checklist guide, principals and instructors were surveyed using questionnaires. Piloting was undertaken to verify the comprehensiveness of the research devices. Validity was established by involving the managers and other specialists in educational planning from the university. Reliability was established through the split-half technique since the pilot sample (36) is large, but even. The reliability coefficient, r = 0.727, which demonstrated strong internal consistency, was obtained using the Cronbach Alpha Method. Using the Statistical Software for Social Sciences (SPSS 23), Quantitative data were investigated utilizing inferential Evaluation of Pearson's Product Moment Correlation along with descriptive statistics like frequencies and proportions and displayed using tables. According to the report, students underperform academically on national exams (KCSE), their completion rates and participation in extracurricular activifres, as well as the frequency and intensity of those activities, are all declining. According to the research, the government and other secondary education stakeholders are making an effort, but the secondary education quality has been affected by the low amounts of instructional equipment, amenities, and teaching personnel that are still accessible. To reach the necessary levels of adequacy, the research advises that the government keep up the practice of providing instructional resources and curricular maintenance materials. The government ought to ensure that the allocation of financial resources is adequate and timely to enable secondary schools to provide physical facilities geared towards the awareness of quatity education. The government should rectify the imbalance in the student teacher ratio, and hire more teachersenThesis