Chicago
    Chicago is an area that my previous searches didn't touch.  It doesn't have the state flagship school or an Ivy League school, but it does have some elite schools and a number of smaller state schools. The elite schools that I looked at are the University of Chicago and Northwestern.   The University of  Chicago is like the typical Ivy League school with 25 percent (S14) of it's courses meeting on Friday.  Northwestern is typical for the Big Ten with 42 percent (S14) of it's courses meeting on Friday.   There are five other state schools in the Chicago area, one of which stands out as a five day school, the University of Illinios Chicago.  The smaller schools don't use Friday nearly as well.  The University of Illinios Chicago has 58 percent (F14) of its courses meet on Friday, which is better than any of the flagship schools.  I will attempt to find out how and why it does this.  The other schools are not as large or selective and yet they use Friday less; Northern Illinios has only 28 percent (S14) of its courses meet on Friday,   Northeastern Illinios has only 31 percent (S14) of its courses meet on Friday, Chicago State has only 34 percent (S14) of its courses meet on Friday and Governor State has only 21 percent (S14) of its courses meet on Friday.
    I would urge the four day schools to either mimic UIChicago or at least change their four day pattern to use MTh  and TF.   This leaves Wednesday as the classless day where students are more likely to study.