https://flyplugins.com/wp-courseware-wordpress-lms/

WP Courseware is an easy to use WordPress Learning Management System. Version 3.0 introduces dozens of new features, some of which include: Quiz question pool to allow for recycling of questions in multiple quizzes. Support for randomizing quiz questions or manually adding specific questions from question pool. Randomized answers within multiple choice questions. Options for timed quizzes.