I don't like it.
I hated the fact that you had to start over every time you got a question wrong. It would have been much better if you were able to answer all the questions, and see your score at the end, and if later you wanted to improve the score, retake the quiz. I personally ain't gonna bother going to finish the quiz, cause it's gonna end up taking me to long, since I have to restart every time I get a question wrong.