I don't either. I was trying to get some accurate information, faced with an opponent in argument who asserted that 97% of the graduating class has no objection to Obama being the keynote (and likewise, finds Mary Ann Glendon's reaction inappropriate). My guess is that the graduating class is split about 50-50 on this, and that it's a painful split.
i agree that 50-50 is far more likely that whoever was postulating 97%.