In practical terms, Adaptability Quotient (AQ) is the difference between a school that becomes brittle under disruption and a school that becomes better because it learns. AQ is not mere flexibility. It is disciplined adaptability — the ability to make wise decisions when yesterday’s best practice becomes today’s obstacle. This article explains what AQ is, why it matters more now than ever, and how school leaders can deliberately develop it not as a personality trait, but as a leadership capability.