Two-stage assessment is an approach in which students first answer questions individually (Stage 1) and then discuss them in teams prior to resubmitting their answers (Stage 2). The student’s grade is determined by a combination of the scores at both stages. This method of assessment can be as effective in a remote as in a face-to-face classroom. The advantage of this approach is that the test doesn’t have to be purely summative it can also be a formative experience. Students can keep learning while they’re tested.
https://www.profweb.ca/en/publications/articles/two-stage-assessments-teach-while-you-test