My recollection is that during the 2008 campaign some group was trying to find someone, anyone who had ever been in an Obama law school class, even to the point of offering a reward of some kind. No one ever stepped forward.
Prof. Thom Lambert of the University of Missouri Law School studied under Obama at the University of Chicago. He wrote a rather scathing article on how embarrassing Obama’s ignorance of the Constitution is.
At least one of his students has come forward to clarify that Obama taught a class on the 14th Amendment. Apparently, it wasn’t a memorable class.