DivvyDAO.org sounds like it has some real potential. The limits with Steem really come down to our imagination. I see many implementations of Steem in the future, and with regards to education, there will be many different models that can compete. Perhaps one "wins" out, or perhaps many exist in tandem and offer students and educators a variety of different paths for education.

Check these out:
https://steemit.com/steemit/@wordpress-tips/steemit-for-wordpress-1-display-your-steemit-blog-in-your-wordpress-website-with-this-free-plugin

https://steemit.com/steemit/@joomla-tips/display-your-steemit-blog-in-your-joomla-website-with-this-free-extension

And @jesta with http://steempress.io/

These are tools that push Steemit posts to 3rd party sites. Eventually, you will see more things like @picokernel built with http://squeek.io - a completely different "window" to the Steem blockchain. That's what we need to build out for education models in order to maximize the potential of the learning environment, in my opinion.