straight from the article:
The rankings are based on five general categories: post graduate success (32.5%), which evaluates alumni pay and prominence, student satisfaction (27.5%), which includes professor evaluations and freshman to sophomore year retention rates, debt (17.5%), which penalizes schools for high student debt loads and default rates, four-year graduation rate (11.25%) and competitive awards (11.25%), which rewards schools whose students win prestigious scholarships and fellowships like the Rhodes, the Marshall and the Fulbright or go on to earn a Ph.D. The complete methodology is available here.
the whole thing is based on success after graduation