Abstract. The purpose of this study is to introduce the graphic presentation food safety and sanitation learning system with parent participation in element school's health and physical education curriculum. The students were divided into four groups: control group, control group with parent participation, learning system group, and learning system group with parent participation. There were three extra variables in this study: learning system, and parent participation. The research data (three exams scores) was obtained before the course, in the middle of the course, and at the end of the course. The results indicate that, first, the estimate of slope of learning system is significantly correlated with parent participation; second, male elementary school students and female elementary school students were similar in the growth rate between each time points; third, the relationship between the initial exam score and the following two exam scores were not significant. Based on the results, it can be concluded that the use of learning system and parent participation were helpful for elementary school students to acquire food safety and sanitation knowledge in the health and physical education curriculum.