While this is usually done by individual item, it can also be done in groups of items known as testlets (Leucht & Nungester, 1996; Vos & Glas, 2000).
When conducting assessments, the evaluation is typically done on an item-by-item basis, but items can be organized into groups known as testlets for this purpose (Leucht & Nungester, 1996; Vos & Glas, 2000).