this article, titled "Location, location, location: Are top universities too far away from low-income high school graduates?" The maps for the article were drawn from this report, titled "Optimal Spatial Distribution of Colleges" which includes similar maps for all 50 US states. Illinois is on page 42.
In this 2008 Mapping for Justice article you can see that the Tutor/Mentor Connection has consistently used maps to encourage colleges and hospitals to build strategies that support the growth of mentor-rich non-school programs in the neighborhoods where they are locate. This article on the Tutor/Mentor Institute blog has the same goal.