A survey conducted by the WSJ shows

60% of economists surveyed rated her an A (90-100), 30% rated her a B (80-89), while 8% and 2% rated her a C (70-79) and a D (60-69) respectively.

This comes as Yellen's term with the Fed comes to an end on 3 February 2018. WSJ pointed out some of the accomplishments she achieved during her tenure:

The lowest unemployment rate in 17 years, steady if puzzlingly low inflation, healthy economic growth and progress on the Fed's plan to unwind its crisis-era stimulus efforts by raising short-term interest rates and shrinking its balance sheet.

Economists surveyed pointed out that her "thoughtful leadership to normalise short-term rates and unwind the Fed's balance sheet has impressed investors worldwide". And also that she is "a dedicated public servant who put her service to the country above all else".

But enough of what they think. What do our readers here think of Yellen and her time in charge? How would you rate Yellen's tenure as Fed Chair?