Interesting link and impressive accomplishment (6th among all private schools, after HYMS (not princeton, which I think has small graduate programs) and Columbia.
Also, #2 in Chemistry, right after MIT!. #9 in Physical Sciences among private universities.
NU has been making some big moves to make its chem / mat science even stronger…one example below:
http://www.northwestern.edu/newscenter/stories/2015/08/bioelectronics-pioneer-john-rogers.html