We are actually hosting an event on Thursday the 28th in Stockholm, to further the use and learning of opensource software in teaching which might be interesting for you:
Tell us a bit more about your work and come by if you can. Or if not we would love to loop you in the online discussion of the topic here :). there are also many interesting learning platform projects on Edgeryders, see for example this thread:
Looking forward to talking more and learn from each other!