I thought I should post a few lines about two project I've been working with recently:
Mechanical Tutor
This module/project allows questions that are generated and evaluated by scripts. In the simplest form it could be "What is A + B?", and varying the parameters A and B, but questions could of course be much more complex (and don't have to be math questions).
Watch a few videos on YouTube
Try out a demonstration at simplytest.me
Course planner
This module allows a quick workflow for creating course outlines and scheduling lessons that follows the outline. The module is still in early beta, but works quite well. (The module is mostly a features export of configuration, but there are also some new Rules actions and a few form alters.)
Watch a video showing the early features
Try out a demonstration at simplytest.me