BackgroundBecause children spend much of their time in schools, schools can play an important role in asthma education for the one in 12 affected children in the United States. School-based asthma education programs are commonly repeated annually, however few studies have evaluated the impact of repeated participation in asthma education in school-based programs.MethodsThis observational study evaluated the impact of Fight Asthma Now© (FAN), a school-based asthma education program for children in Illinois schools. Participants completed a survey at the start and end of the program, including demographics, prior asthma education, and 11 asthma knowledge questions (maximum knowledge score = 11).ResultsAmong 4,951 youth participating in the school-based asthma education program, mean age was 10.75 years. Approximately half were male and Black. Over half reported no prior asthma education (54.6%). At baseline, repeat attendees had significantly higher knowledge versus first-time attendees (mean: 7.45 versus 5.92; p < 0.001). After the program, both first-time and repeat attendees had significant knowledge improvements (first-time: mean = 5.92◊9.32; p < 0.001; repeat: mean = 7.45◊9.62; p < 0.001).ConclusionsSchool-based asthma education is effective for increasing asthma knowledge. Notably, repeated asthma education in school leads to incremental benefits for knowledge. Future studies are needed to understand the effects of repeated asthma education on morbidity.