The AI Tutor, not to be confused with the AI Tutor node in Quests, is a built-in, personalized tutor for all of your students. It acts as a learning reinforcement system by prompting students to practice Quiz questions and other things that they didn't answer correctly during a Quest. It will also reinforce content that they performed well on in order to help them retain their knowledge.
The AI Tutor will automatically appear when students sign into CritterCoin if there is personal content to practice.