Reviewing Practice Tests

When reviewing practice tests, there is no option to "go to next problem," instead one must "Return to results" in order to go to the next/previous question. This is not particularly efficient. Also, we should have the option to review the test in a fashion that allows us to not know what questions we got incorrect, so that we can gauge whether the incorrect questions were due to a mistake we made the first time through (probably due to the time restraint) or if we genuinely don't understand the question(s). Similarly, for the correct answers, we can get an idea of whether we truly know the answer or whether it was a lucky guess the first time through.