validity

An assessment system which relies heavily on making inferences about individuals, teachers, and schools from just end-of-course examination data can be seen as hugely problematic; to some one of the principle issues is that, by doing so, a serious threat to validity has occurred: construct under-representation. What this means is that, since only a small part of the entire taught curriculum can be assessed, other equally important learning outcomes go untested. (Brookhart et al., 2019).