One of the most widely pursued goals in philanthropy is the “improvement of K-12 education.”  In the current issue (Spring 2004) of SSIR, talk show host Michael Krasny brings together two experts from different fields, Tom Vander Ark, executive director for education at the Bill and Melinda Gates Foundation (and a former school superintendent) and Jerry Porras, a professor emeritus of organizational behavior and change at the Stanford GSB, to discuss this complex topic.  A thread running through the conversation is the role of test scores in driving the improvement process.  If not test scores, then what?  What do you think?