Psychological, neuropsychological, and psychoeducational assessments are available to clarify a diagnosis, facilitate a deeper understanding of personality, assess for a learning disability, evaluate attention and executive functioning, and obtain accommodations for standardized testing. Assessments are powerful tools that facilitate a deeper understanding of personality and aid in problem-solving for learning issues. In clinically complex presentations, psychological assessment provides clarity via a deeper and refined understanding of the nature and severity of symptoms. For children, adolescents, or adults who struggle to learn, manage attention, or engage in standardized test taking, a psychoeducational evaluation can reveal the underlying reasons for difficulty, assist in the development of school-based interventions, and provide evidence for the need of testing accommodations.