How do you get into Harvard Law with a C average then?
>>>How do you get into Harvard Law with a C average then?<<<
Generally you don't. Kerry didn't. But sometimes admissions officers will admit on the basis of some especially outstanding life experience.
As for business school, and I don't know what the criteria were in '68, today they value some life experience over grades. A 4 point in mathematics Columbia grad that I know applied to Harvard Business School and they told him to get some real world business experience and then come back. Perhaps W got in for learning to fly that supersonic flying coffin and/or working on political campaigns in Texas and Alabama.