WebExam allows you to create your own multiple choice
exams on the Web. If you create an answer key database, it will
grade the answers submitted by a user and gather all completed exams
in a database.
Application in action
The following are actual implementations of WebExam. Please do not clutter
these sites with unnecessary tests and the like. The administrators were all
kind enough to allow me to cite them as working examples, so be nice to
them on eXtropia's behalf!