So that we have these in the same place:
December 14, 2011: What Is College For?
April 11, 2011: Burden of College Loans on Graduates Grows (and Letter to Editor)
January 11, 2012: What Is College For? (Part 2)
August 23, 2011: Do We Spend Too Much on Education?
January 11, 2012: Getting a Degree: Less Rigor, More Value
You can also use the NYT search database, which goes back to 1851, to explore other possibilities, like this one from 1948:
