Now that you know about Minecraft, I can tell you the news. In Sweden they are adding Minecraft class to their national school curriculum. The reason that there doing this is because they say it helps kids learn math and science. Minecraft is not a permanent subject yet but they are thinking about making it permanent.
Below is a video with this story's authors, Finn and Kasama, talking about the new Swedish curriculum. Kasama also highlights what the Hillwood uppergraders have been doing with Mindcraft in math class.