Early marriages in Indonesia result in various detrimental impacts, encompassing psychological, social, and health aspects. Psychologically, teenagers marrying early often struggle to navigate their emotional well-being amidst household challenges, contributing to an escalating divorce rate within this demographic. Additionally, early marriage poses significant risks to reproductive health, particularly for teenage girls, leading to complications such as premature birth, bleeding, and low birth weight (LBW) babies. Consequently, this trend contributes to the rising maternal and infant mortality rates. To address these issues, an analysis is conducted to understand the impact of providing education through e-modules on enhancing teenagers' knowledge concerning family planning preparation. The research employs a Quasi Experiment pre-test post-test design with a control group. The study focuses on peer counselors within the Kramatwatu Family Planning Hall work area, totaling 17 students, utilizing total sampling as the sampling technique. Findings reveal a notable improvement in peer counselors' average knowledge, increasing from 61.47 before education to 75.59 afterward, indicating a difference of 14.09. Statistical tests using the T-Test result in a significant p-value of 0.000 ? 0.05, leading to the acceptance of Ha or rejection of Ho. Hence, it can be concluded that there is a substantial increase in knowledge among peer counselors in the control group regarding Family Life Planning. Future research endeavors should explore the development of peer counseling modules covering diverse topics beyond family planning to comprehensively address the needs of adolescents.