This course focuses on attention-deficit/hyperactivity disorder (ADHD) and evidence-based approaches for its assessment, diagnosis, and intervention, with an emphasis on ADHD in educational settings. The course has three major sections. In the first section, we will cover the foundations of ADHD, including historical changes in the conceptualization of ADHD, core characteristics, developmental changes in its clinical manifestation (particularly in the educational setting), its current neuroscientific understanding and life-span impairments in cognitive, academic, social and family functioning. In the second section, we will explore issues and practices around assessment and diagnosis of ADHD from both medical/clinical and educational perspectives, to understand on-going controversies and delineate best practices. The third section of the course will focus on evidence-based interventions (medical, cognitive, educational), with emphasis on school-based, class-wide approaches, and educational accommodations.