This paper reports on the extent of policy implementation on strategic planning in secondary schools in Kenya. To achieve the aim of the study, all the 41 sary schools in Rangwe sub-county were included. The targeted respondents were school principals and deputy principals. A purposive sampling method was used to select the respondents from each school. A principal questionnaire (PQ) and a document analysis checklist were used for data collection. The data collected was analysed using descriptive and inferential statistics. The study affirms that strategic planning has not been fully embraced in Kenya. This study, therefore, amplifies the need for policies implementation as stipulated and within a time frame to realize their effectiveness in different cultural backgrounds.