The purpose of HoDs

This is why there could be some justification as to why any discourse surrounding the performance of a school centres around the work of classroom practitioners and school principals.

When it comes to accounting for learning outcomes, to the subject specialist, the question is, how did the subject fare while the principal must account for the overall performance of a school? It would appear much accountability rests on the shoulders of the principal and the subject teacher and it is not clear where the HoDs are in the equation.