One of the great frustrations with America's public education system is that our success stories are rarely scaled up so that more students can benefit. To our children's detriment, decision-makers are more likely to chase fads, shift course or choose "reforms" lacking evidence of effectiveness than they are to adopt and expand educational approaches that have been proven successful.
Unfortunately, this is true on many levels. Accomplished teachers rarely have opportunities to share their craft with colleagues or to mentor new teachers. The "secrets" of successful schools too often remain a mystery, even to schools close by. And rather than replicate the practices of high-performing school districts for the benefit of far more students, many superintendents seem intent upon putting their own imprint on a school system -- evidence be damned.
The results of an international assessment released earlier this month show the consequences of America's failure to build on what works in education. American students ranked in the middle of
