WooThemes - Sensei v1.0.3 teach courses with this WordPress plugin | 587 KB
Teaching coursework has never been easier, all within WordPress. With the Sensei plugin you can create courses, write lessons, and add quizzes. Set lesson and course pre-requisites, allow user registration and even charge for your course content using WooCommerce if you want.
DEMO:
http://www.woothemes.com/products/sensei/