I'm finishing my degree in psychology this year. In my graduation here in Brazil I've discussed intensively the RPG as a tool for learning.
I even have GMed some in-class sessions to improve the experience in Neuroscience, and used RPG to help high-school students in geography and history lessons.
A couple of modules were created using brazilian history as part of the plot: One was about the Portuguese Settlers and their encounters with the indigenous people; the other one was about a famous painting, the plot involved it being stoled and the necessity to learn about the painting and artist history to get some clues about its whereabouts.
There are a lot of other examples, and I'll try to write about some of it at another post.
I'm sorry about grammar mistakes, but english is not my mother language.