You don't need a Ph.D. in math to know that student-loan debt is compounding at an alarming rate. In the last six weeks alone, two new government reports have detailed the growing student debt burden, which has no doubt contributed to the weak economic recovery and could remain a drag on growth for decades to come. First came a report early last month from the Federal Reserve Bank of New York stating that the $870 billion in loans carried by some 37 million present and former students exceeded the money owed by all Americans for auto loans, as of the Sept. 30 end of the government's 2011 fiscal...