Hi Populi,
A Registrar has access to quizzes and exam answers to any class that is offered in their school. Because of this, it is imperative that Populi have in place a means whereby any Registrar who chooses to become a student in Populi has their Registrar access disabled so they cannot access the answers to any quiz, test, Midterm or Final. Currently the only option available to teachers is by proctoring the test, which doesn't solve the initial problem of a student having access to the answers before the exam.