When it comes to public-sector pensions, writes lead author Michael B. Lafferty in this report, "A major public-policy (and public-finance) problem has been defined and measured, debated and deliberated, but not yet solved. Except where it has been." As recounted in "Halting a Runaway Train: Reforming Teacher Pensions for the 21st Century", these exceptions turn out to be revealing--and encouraging. As leaders around the country struggle to overhaul America's controversial and precarious public-sector pensions, this study draws on examples from diverse fields to provide a primer on successful pension reform. Chapters include footnotes. [This paper was written with Chester E. Finn, Jr., Janie Scull, and Amber M. Winkler.]