You should ignore college rankings. Seriously. It might be helpful to have a general idea of where schools fall on a ranking, but those reports are so broad that they are not helpful. Understanding who you are and what you want to do with your life is a much more important guide to choosing a college than looking at a college rank.
Figure out who you are and what you want to major in first. Then look specifically at how the universities you are targeting run those programs and majors. This will me much more helpful than a generic number from US News and World Report.