I ran four quizzes over the past week and always unchecked the box for "Let Students See The Correct Answers". And so far as I know, no one saw the answers until I published the grades. Today I ran two more, and after each one I was deluged with emails asking about specific questions and why they were graded the way they were. Some students wanted explanations for their low total scores, since they didn't realize that their scores are not completed since some of the questions have to be graded by hand later. I confirmed with some of them that they could see the correct answers and grading right after today's quizzes, but could not with previous quizzes. I double-checked the settings on today's quizzes, and they still showed no checked box alongside "Let Students See The Correct Answers". How can this be happening, and how can I prevent it in the future?