Longish not very searching piece in Information Week about Udacity's model, with teasing references to adaptive learning and to the way Udacity is turning its attention to adaptive learning.
This reads as if it has had the attention of a PR person. Here is the key para concerning maths:
"We know that students learn at different speeds. This is particularly the case in the mathematical sciences, where it just takes a while to really understand certain concepts. Rushing students through a timed curriculum with a pre-defined pace cannot be the best way to achieve lasting success. In our remedial math class, we only gave students a single chance to pass various exams. If they even failed the first midterm, they failed the class. On campus, multiple chances are offered. There are clear opportunities to rethink assessment as a whole, especially as we open up new pacing options."
It feels to me there are important lessons from this that should be incorporated in our Marketing and Learner Engagement work. e.g. how much do we leave it open vs target hard-to-reach learners