QuizStar is a Web-based quiz maker that enables you to create, administer and automatically grade your quizzes online!

With QuizStar you can
- Manage classes and quizzes
- Attach multimedia files to questions
- Make quizzes in multiple languages
- Access from any Internet-connected computer
- Allow students to complete and review


i am learning and creating an online quiz for my students.
It is easy to use.
But one problem is i can't insert the diagram and math equation in my questions. may be somebody know about Quiz Star and teach me.

reference:
http://quizstar.4teachers.org/