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<p>[US</a> N&WR](<a href=“http://colleges.usnews.rankingsandreviews.com/college/items/1739]US”>http://colleges.usnews.rankingsandreviews.com/college/items/1739) has Northwestern’s undergrad enrollment at 8,284. Apparently different criteria are being used. Full time vs. part time. Summer? Number of individual students during the year? The point was to compare the enrollment between these schools of the OP’s interest, and my link provided an authoritative source with these three schools compared, presumably using similar criteria.</p>