The 'Origin of Everything: Why Do We Get Grades in School?' video explores the historical development and impact of grading systems in education. It explains the origin of grades in the late 18th century with Yale's Ezra Stiles and traces how grading evolved with scales and letter grades. Key concepts include the role of grades in determining academic success and access to higher education and careers. The video questions the validity of grades as indicators of learning and success, citing research on self-worth and educational attainment. The discussion highlights evolving educational paradigms, such as narrative and standards-based evaluations, which prioritize individual growth over traditional grades. This content is relevant for understanding educational reforms and evaluating student performance metrics.