This study was carried out to increase the emotional intelligence skills of teachers in order to improve their relations with students and parents after the pandemic, and to determine the results of the in-service training implementation prepared for this purpose. Within the scope of the study, an in- service training program was prepared and implemented to teachers in order to increase teachers' emotional intelligence skills and to use these skills in their relations with students and parents. The sample of the study consists of 18 teachers working in a private primary school. The method of the study was determined as the quasi-experimental method, which is an experimental technique. In this context, emotional intelligence scale was applied to the participants as a pre-test before the application and as a post-test after the application. In addition, at the end of the implementation, a questionnaire prepared for the study, which they could answer as yes or no, was applied to the participants in order to support the results obtained from the pre-test and post- test. Since the number of participent was less than 30, Wilcoxon Signed Ranks Test was applied. According to the results of the study, when the pre-test and post-test data of the participants were examined, it was determined that the emotional intelligence levels of the participants increased after the in-service training. The data obtained from the closed-ended questionnaire prepared by the researchers to support the research data also supports this result.