How does ADHD affect academic performance in teens?

Many teens with ADHD understand the material but struggle with execution. Assignments, deadlines, studying, and organization are often the biggest barriers. This can lead to a gap between ability and grades, which is frustrating for both teens and parents. Clinicians look for patterns like incomplete work, last minute effort, or inconsistent performance. Support often focuses on structure, scaffolding, and reducing executive load rather than ability. When supports are in place, academic performance often improves without changing intelligence or motivation.