If a student does not pass a lesson topic, Moby will automatically give the student another lesson topic on the same skill. However, if the student fails two to four lesson topics in a row (the number of lesson topics varies based on the skill), Moby will post the score for that lesson topic, and it is up to the teacher to decide whether or not to reassign it.

Moby will not reassign an entire lesson, but the teacher can always reassign an entire lesson or individual lesson topic in their teacher account.