Ajaxed PHP Library For Creating Quizzes: quizzy
quizzy is an open source PHP-Ajax library for creating online multiple-choice quizzes.
It uses XML files for configuring the questions/answers of every quiz where each question and answer can have a true/false or a point value.
All data is loaded via Ajax which makes it impossible to view the future questions or answers of them inside the source.
Questions can have an explanation text once an answer is submitted. And also, images can be used within questions and answers.
After the quiz is completed, it displays your calculated score and grade (optionally, with an image for every grade).
There is also an online quizzy builder, an online form which helps you creating the XML files easily.
quizzy uses jQuery and the jQuery loader plugin for notifying users in every Ajax request.