This study aimed to identify the causes of school dropout among secondary school students in Thika sub-county, Kiambu County, Kenya, and to explore strategies to mitigate this issue. Data was collected from 9 principals, 85 teachers, and 182 students, yielding an 84% response rate. The findings revealed that school dropout rates were influenced by a combination of academic challenges, financial constraints, and personal issues such as family problems and health concerns. A lack of motivation and disengagement from school were also significant factors contributing to dropout rates. The study highlighted the need for a holistic approach to address these challenges, including academic support, vocational training, financial aid, and increased parental and community involvement. Based on the findings, the study recommends several key strategies to reduce dropout rates. These include the development of financial aid programs, strengthening academic support systems, enhancing counseling services, and promoting parental involvement in students’ education. Additionally, fostering a positive school environment and providing community support can play a crucial role in reducing dropout rates. The study emphasizes the importance of a comprehensive approach to tackle the socio-economic and academic challenges faced by students, ensuring a supportive environment that encourages persistence and academic success. Future research is needed to evaluate the effectiveness of these strategies and explore further interventions to improve educational outcomes and reduce dropout rates in secondary schools.