Quiz Pro lets you to conduct online exams. You can create Free and Paid quiz and make money. With Quiz Pro you can generate tests dynamically from Question Banks. Quiz Pro supports PayUMoney, CCAvenue and offline Payments. You can purchase it from here: http://abhinavsoftware.com/product/quiz-pro-online-examination-system-with-ecommerce/
In the Quiz Pro interface you must know the meaning of button icons. They are used throughout the system.