School health services are almost neglected due to minimized awareness concerningcommon health problems and first aid management. This study aims at evaluating the effect ofa brief training program on improving knowledge and practices targeting first aid amongstudents aged 13–15 years. With the use of the pretest-posttest design, this quasi-experimentalstudy has been employed. One hundred and ten school students (13–15 years old) in threerandomly selected schools have been allocated to a 4- session experimental condition. Thedependent variables of this study are knowledge and practice evaluated at the baseline (pretest)and post-intervention. The analysis has yielded that respondents have sufficient knowledgeafter receiving the training program targeting first aid compared to the baseline. Additionally,the findings indicate that respondents have sufficient practice with first-aid post-interventioncompared to the pretest. This study has also provided additional evidence that a 4-sessiontraining program is predictive of positive outcomes in improving knowledge and practicetargeting future school students. Besides, this study has empirically supported the effectivenessand feasibility of the training program in improving knowledge and practice