This article explores the limitations of traditional maximum performance tests in psychological assessments within educational settings, highlighting the need for efficiency assessments to better understand students' real-world capabilities. While maximum performance tests like IQ and achievement tests reveal peak abilities under optimal conditions, they often fail to reflect students' proficiency and speed, crucial for classroom success. Efficiency assessments, such as Curriculum-Based Measurements (CBMs), provide valuable insights by evaluating both accuracy and speed, offering a more practical measure of skill mastery. By integrating these assessments, psychologists can more accurately identify areas of need, inform targeted interventions, and monitor progress, ensuring tailored support for each student's unique learning profile. This comprehensive approach enhances academic development, ensuring that students receive the necessary support to thrive in educational settings.