The purpose of the study was to investigate the effects of constituency bursary provision timings on internal efficiency of public secondary schools in TransNzoia County Trans-Nzoia County, Kenya. The study was underpinned on Human Capital Theory developed by Schultz in 1971. The study adopted a descriptive survey research design with a target population of 77,337 persons. 78 (30% of 261) schools were randomly selected 16 from each sub-county with the exception of Endebes with 14 schools. A sample of 399 respondents was selected using Fischer formula. These included 306 form three students, 78 principals and 5 DEO, 5AEO and 5 CBF. A maximum of 4 form three students were randomly selected from the sampled schools. Data was collected data using questionnaires, documentary analysis and interview schedules. The instruments were validated by the three experts. Reliability of the instruments was determined through a pilot study where the Pearson‟s correlation coefficient of 0.73 was obtained, hence the instruments were considered reliable. Quantitative data was analyzed using descriptive and inferential statistics, and presented in tables, while qualitative data from interviews was organized into themes and subthemes. The study established that, there was a significant (p= .001; α = 0.05) relationship between constituency bursary provisions and internal efficiency in public secondary in Kenya. It was therefore recommended that for enhanced internal efficiency in public secondary schools, there should be greater stakeholders‟ involvement during the bursary provision time.