ADHD is Attention-deficit/hyperactivity disorder. Many children suffer from it but many go undiagnosed. I have known many children who have ADHD and were difficult in class because they weren't able to get the help they needed. Teachers would become frustrated with them because they kept getting distracted or off task. It is my duty as a teacher to make sure that children don't feel like I am getting upset with them for their disability. I need to help students find ways that help them pay attention instead of getting upset with them for not listening.