The first charter school opened its doors nearly twenty years ago, and there are now over 5,000 charter schools across forty-two states and the District of Columbia. Yet many Americans are still unclear about exactly what these schools are and how they operate, and why some seem to be so great while others...not so much. The short film 'Unchartered Territory,' features some of the most successful pioneers of this still-developing education frontier, describing the premise of charter schools and explaining both the opportunities and obstacles presented by them.