The study aimed at examining the influence of physical facilities on students’ academic achievement in community secondary schools in Karagwe District. The study employed mixed approach also convergent parallel design was employed in which 287 participants were selected to give response in the study. Data was collected through questionnaires, interviews, observation and document review. Quantitative data was analyzed by using Descriptive statistics with aid of Statistical packages for social science (SPSS) version 20 and Qualitative data was analyzed by thematic analysis. The findings of the study revealed that students’ performance in community secondary schools at Karagwe District is not promising due to inadequacy of physical facilities like library, chairs and desks, teacher’s houses, laboratory and game facilities. The contributions of the findings to the system theory show that the organization like school institution in order to achieve the pre-determined goals must operate as whole. Thus the findings of the study show that in Karagwe District inadequacy of physical facilities as one of the components in community secondary schools leads to failure to accomplish targeted goals. The study recommended that the community members should be educated for financing education. Also, the government was advised to set up adequate budget that will enable the improvement of these facilities.