Most of the children spend a lot of their time at school. Therefore, school is an important place for program implementation or strategies that can be used to improve a child's health and well-being. Nevertheless, most teachers who worked at schools in the Wonogiri district including in Madrasah Ibtidaiyah Muhammadiyah Tawangharjo do not have sufficient knowledge and skills related to child’ health. For example, knowledge related to basic life support for emergencies at school is also still limited. Therefore, this community service aims to improve teacher capacity and awareness of children's health and well-being. The basic life support training was held online through Zoom meetings twice: in February and May 2023. Ten teachers from MIM Tawangharjo joined the training. All participants were very enthusiastic to follow the training. The pre-test showed that teachers' knowledge score on basic life support was still very limited, with an average score of 3.5 out of 10 total scores. After training, teachers' knowledge improved significantly. It was shown by the improvement of teachers' knowledge scores on the post-test with an average score of 9 out of 10 total score. There was almost a 70% increase in teachers' knowledge related to basic life support for children after training. The head of the school and teachers welcomed this community service activity and they hope that this training and collaboration can regularly be done to improve teachers and the school's capacity to be a child-health-friendly school