The purpose of this study is to investigate the teaching process of elementary school teachers while educating students with attention deficit and hyperactivity disorder. The subjects of this study were 10 elementary school teaches who had experience teaching students diagnosed with ADHD within the last 5 years, and the individual in-depth interviews were conducted on them. As a result of analysing the in-depth interview data by grounded theory approach, 65 concepts and 36 subcategories were derived from open-coding, and 17 categories were derived as a final results. The central phenomena experienced by elementary school teachers were struggling to understand difficult children and compressed by a heavy sense of responsibility to make difficult children even a little better. Teachers struggled by discovering children s problem behaviors and approaching them in a variety of ways to understand and educate children about why they behave. In this process, the teacher first understood the child s attention deficit and hyperactivity disorder, and began to change the teaching method according to the child. Teachers learn how to protect themselves by changing their perspectives by controlling their own emotions rather than by controlling their own emotions through experiences that lead to exhaustion due to stress while trying to correct problem behaviors under the responsibility to change children. In the end, they grew up as a teacher who understands children. This study can be used as basic data to effectively educate ADHD students in the school field by looking at the education of elementary school teachers for ADHD students.