The primary aim of this study is to assess the knowledge, attitudes, and skills of primary school teachers regarding the management of musculoskeletal trauma through first aid interventions and to determine the effectiveness of a sustainable training program. The preparedness of 138 teachers who received first aid training for trauma intervention and the impact of these trainings on health practices were examined by pre- and post-tests. It was determined that 87% of the teachers participating in the study had not received emergency trauma training before. Pre-training test results showed that the participants had a low level of awareness. However, the increase in mean scores from 6 to 16 and the decrease in standard deviation after the training revealed a significant increase in teachers’ knowledge, attitudes, and skills. These results suggest that emergency trauma training programs significantly increase teachers’ ability to respond to emergencies and emphasize the importance of sustainable first aid training. Analyses based on gender and branch revealed that post-training test scores were similar and all teachers showed high performance. The findings emphasize the need for systematic and comprehensive emergency trauma training programs for all teachers and the importance of these programs for sustainable health and safety practices.