The US News website states that their process for ranking graduate programs "involves factors ranging from the personal to the objective. [...] U.S. News is able to present the most current figures on enrollment, job placement, faculty and other critical quality indicators." And they survey "experts who teach and direct programs in these fields to evaluate their peer programs."
From this we know their scoring function includes weighted inputs of: enrollment, job placement, faculty metrics (citations, publications, impact?), and "expert" assessments.
Does anyone know more about the score formula? What are the specific inputs? How are they weighted?