I'm using it for a college program and was able to setup a basic ACL and subscription quickly to offer courses on our website. Managing the back-end is fairly intuitive. There's even a bunch of free add-ons to work with document management and downloads if you want to include those in your subscriptions. However, the product isn't quite designed to handle all aspects of an educational site just yet; though Helix and his team have been listening to my requests and expressed desire to include these features in the future.
Keep up the good work!