Yes QuizGlobal is 100% free to make or play quizzes. Quiz creators register and can create an unlimited number of quizzes each with an unlimited number of questions.
No, not unless results need to be tracked
(a) Password protect the quiz
(b) Make the quiz private, however, to track each individual result, it's best to create a course.
(a) - Create a course and add (a) tests (quizzes) to the course (b) enrolments to the course
(b) - Create a course and add (a) tests (quizzes) to the course (b) supply the course Id to the enrolments. When they log in they can click "Join Course" and enter the course Id.
The means the email is already signed up with Quiz Global. Supply the course id and get the enrolment to click "Join Course" when they log in. You will then be able to track their results.
No, the reason why is an enrolment can create quizzes so we cannot allow a teacher the functionality to delete an enrolment. QuizGlobal unlinks the enrolment. If you need to track a registered account, simply supply the course id and get the enrolment to click "Join Course" when they log in. You will then be able to track their results.