You asked, we listened: teachers can now allow students to retake quizzes in Traditional Mode.
Previously, students could only retake quizzes in Game Mode. Now, there is a new preference called "max quiz retakes" that controls how many times a student can retake a quiz in Traditional Mode. It defaults to 1 retake, and can also be set to either 2 retakes or 0 if disallowing retakes. We hope teachers will find it helpful to have this added flexibility.
Find this setting under "My Account" in the TCC.