Q: How do students get 3 stars? Can a level be replayed to improve the star rating?
A: Students earn between one and three stars for each level that they complete. If they fail to earn at least one star, they will need to repeat that level before they can move on. Depending on their progress, supplemental levels may appear to help enable the student to succeed at a given level.
In order to earn three stars, students must answer all the problems correctly. Students can repeat a level to earn additional stars.