Purpose: This paper is one of seven in this volume elaborating different approaches to quality improvement in education. This paper aims to delineate a methodology called Deliverology. Design/methodology/approach: The paper presents the origins, theoretical foundations, core principles and a case study showing an application of Deliverology in the Kentucky Department of Education in the USA. Findings: The core principles underlying the approach are embodied in its guiding questions: What is our system trying to do? How are we planning to do it? At any given moment, how will we know whether we are on track to succeed? and If we are not on track, what are we going to do about it? Originality/value: Few theoretical treatments and demonstration cases are currently available on commonly used models of quality improvement in other fields that might have potential value in improving education systems internationally. This paper fills this gap by elucidating one promising approach. The paper also derives value, as it permits a comparison of the Deliverology approach with other quality improvement approaches treated in this volume.