Dubious minutes indicate sessions of poor training. This article will explain the three reasons minutes are marked dubious.

When we detect dubious behavior, the entire session is marked as dubious. A lack of engagement in part of a session affects the learning within the entire session.


When a session is marked as sandbagging, the student was inactive three or more times during their training. For more information, please read this article on sandbagging.

Very Low Accuracy

Very low accuracy is usually a sign that the student is training without paying attention to their work. Poor accuracy is often accompanied by review times of 10 seconds or less. We mark sessions as dubious if the student's session accuracy is below 30%.


Students may attempt to cheat by using a script or program to train for them. For more information, please review our article on cheating, and how to identify cheating