This study aimed to evaluate the educational effects of an education program about food allergies in elementary school children. We conducted an education program consisting of eight classes for a total of 4,744 students at 100 elementary schools in Seoul and investigated changes in knowledge and awareness about food allergies in participants using a questionnaire. A total of 576 students (12.1%) reported that they have taken medical treatment because of a food allergy. After education, the knowledge score of participants significantly increased from 2.7 to 3.3 out of 5.0 (p<0.001). The ratio of having a friend with a food allergy decreased from 24.7% to 19.8% (p<0.001). The participants responding as having helped a friend with a food allergy significantly increased from 15.5% to 17.7% (p=0.003). Before education, 16.8% of respondents answered that they felt pity for friends with food allergies, whereas this percentage significantly decreased after education (p=0.034). Among 576 students with food allergies, 21.5% reported that they felt depressed due to their food allergies before education. However, the percentage significantly decreased after education (p<0.001). These results suggest that the education program about food allergies for elementary school students needs to be extended more widely to children.