To bring improvement, Bloom stressed formative assessments must be followed by high-quality, corrective instruction designed to remedy whatever learning errors the assessments identified. Unlike reteaching, which typically involves simply repeating the original instruction, correctives present concepts in new ways and engage students in different learning experiences.
He explains that concerns about time and coverage can be overcome by using a corrective process, that this is what real life is like (i.e. surgeon, pilot), and the everyday reality of mastery and fair grades (i.e driver’s license.)
I guess it raises the question, what is the point of, if students are not given the opportunity to act upon it?