Adolescents in urban Kenya often lack financial literacy skills necessary for managing personal finances effectively. A comparative study design was employed, with data collected from two groups: one receiving regular financial education in schools and another serving as a control group. The intervention group showed a statistically significant increase of 25% in savings behaviour compared to the control group at the end of the second year. School-based financial literacy programmes are effective in fostering adolescent savings behaviors, warranting further sustained investment and replication. Educational institutions should integrate regular financial literacy education into their curricula to enhance student financial capability.