Monitoring children’s health is critical for ensuring growth and development. However, non-integrated recording and reporting methods often result in inconsistent and inaccurate data. This study aims to increase knowledge and skills in monitoring children’s health in elementary schools, from anthropometric measurements to recording and reporting. The method used was a quasi-experiment (non-control, non-randomization) involving teachers, school staff, and related officers (n=25). The intervention consisted of educational and training sessions in anthropometric measurements, monitoring children’s growth and development, and training on using MySIMOKA, a web-based application for monitoring children’s health and training. Evaluation is carried out by providing a pre-test and a post-test. The intervention significantly increased participants’ knowledge (p=0.001). The calculated effect size of 0.47 shows that the intervention has a medium effect, confirming the effectiveness of education and training in increasing participants’ knowledge. Participants also showed improvement skills for the children’s examination. MySIMOKA system usability scale was 66.72, meaning the system still needs to be improved. Health education and training sessions and practicing MySIMOKA significantly improve participants’ knowledge and skills regarding monitoring children’s health in elementary schools. Further assistance and cross-sector collaboration are needed to ensure the sustainability of child health monitoring and data entry.