That information has not been released; IQ tests are generally confidential, no matter whether the person is famous or not. We do know Michelle was an excellent student and got good grades at both Princeton and Harvard Law School, and reporters who know her have remarked that she is extremely well-read and very intelligent.
attorney
obama
Michelle Obama
Michelle Barack
Michelle Obama.
mike
Michelle is the First black lady in the White House.
The Obamas have two daughters: Malia and Sasha.
Michelle Obama
Malia
1998
You can find her signature in wikipedia