On-Line Quiz Assignment

I used the site http://www.proprofs.com/ to create a multiple choice quiz on saftey signs for my students.  Using this site to make the quiz was very simple, easy to understand and quick.  I also liked that I could use an image or video in each question.  I would have liked to be able to use pictures in the answer area as well but this site didn't offer that option.  To take the saftey sign quiz click here.  One way I could get my students involved in making quizzes, is to show them a video and as a group have the students decide what information is important to remember from the video.  Using the information from the students, I can create an on-line quiz for the video.  Or I could have the students each come up with a question about the video to put on a quiz and then I could do the technical part of actually making the on-line quiz.