When the District of Columbia's city councilors handed Mayor Adrian Fenty control of the city's public schools in 2007, they were hoping for salvation. Or maybe just absolution. Fenty appointed Michelle Rhee, then-president of The New Teacher Project, as chancellor. She and her longtime colleague and eventual successor Kaya Henderson spent the…

From tuition vouchers for private schools to charter schools to voluntary transfer programs within and between public school systems, school choice has been at the center of the school reform debate for two decades. But with the voucher movement unable to sustain much momentum, charter schools still serving a small percentage of the nation's…