From the site:
What is ThatQuiz?
- A free service for teachers who want to replace paper tests with online testing.
- An online grade book providing fast analysis of class and individual student progress.
- An exchange for teachers to share the resources they create.
- A skills site for students, especially useful for math practice and testing.
Who uses it?
- Students all over the world, at home and at school.
- Math teachers. Science teachers. Language teachers. All kinds of teachers.
- You, if you want to spend less time grading and more time teaching.