Emotional disturbance is defined by the IDEA as exhibiting one or more characteristics such as an inability to learn, build relationships, or demonstrate appropriate behavior over a long period of time and to a marked degree. It can include conditions such as anxiety, mood disorders, and schizophrenia. Students with emotional disturbance often struggle academically and socially in school due to both biological and environmental factors. Schools use assessments, functional behavior analysis, and behavioral intervention plans to help identify and support these students.