Abstract: A computer-implemented method of assessing depth-of-understanding is disclosed. The method may comprise receiving a target response associated with a question. The method may comprise receiving a learner response associated with the question and calculating a total relevancy score for each of the learner responses by determining a relevancy score with respect to each word, keyword, and keyphrase in the target response text and in light of all learner responses, and summing all relevancy scores determined for each learner response. The method may also comprise assigning each of the learner responses to one of a plurality of tiers based upon which tier contains the total relevancy score of the learner response and sending to a facilitator client device an assessed response for each of the learner responses. The assignment of each of the learner responses to one of the tiers may be substantially concurrent with the receipt of the learner response.