These pages include current and historical coding frames used in HESA data collections and publications.
Subjects of study
HECoS - the Higher Education Classification of Subjects (HECoS) is the new subject coding system used by HESA, UCAS and the Student Loans Company from 2019/20. Also contains information about the subject groupings in the Common Aggregation Hierarchy.
JACS - the Joint Academic Coding System has been used to classify subjects from 2002/03 to 2018/19. Also contains information about the previous HESA Code classification.
Academic departments and Disciplines
Cost Centres - financial reporting tool used as a proxy for academic departments in HESA data.
REF 2014: Units of assessment - lists the coding of disciplines for the 2014 Research Excellence Framework and the 2008 Research Assessment Exercise.