MM spent years and years at a Norwegian university getting some king of post-graduate degree (which was rich since she didn't have a degree). It was her go to excuse to cancel engagements and avoid working when calling in sick three times in a row got too much. In the end I think she "graduated" (like she was accepted in the programme, ie, shadily). In any case it's been years she she stopped that programme.
And iirc she also went to some type of school when they lived in London.
MM's program of study is explained here by a poster on another forum (mods, please delete if this is against the rules):
M-M's new degree is an Executive MBA (EMBA), not an MBA. The EMBA programs were developed to meet the educational needs of managers and executives (and Princesses), allowing the student to earn a business-related graduate degree in two years or less while working (or Princessing) full time...http://www.theroyalforums...-18282-3.html#post1417924