Abstract: With the introduction of Information and Communication Technologies in schools, major changes should be observed in the way education is managed, but there is still minimal evidence on the impact of these technologies in public secondary schools in Uasin-Gishu County. The objective of the study was to analyze how ICT frequency of use influence effective management of public secondary schools in Uasin-Gishu County. The study was based Open Systems Theory and The Technology Acceptance Model (TAM). The researcher adopted the correlational and cross sectional research designs. “The population for the study was 189with 171 respondents being selected using stratified and simple random sampling method. Primary data was collected using structured questionnaire measured on linker type interval scales of 1-5 between April 2021 and August 2021. Reliability of the research instrument was tested against Cronbach’s alpha coefficient where an overall reliability score of 0.778 was achieved while validity was gauged using panel of experts, ensuring that the indicators of each variable were within the same construct and operationalizing the instrument as per the variables.