"A new report from a Wall Street rating agency warns that Gov. Chris Christie's seemingly dormant plan to overhaul government worker pension and health benefits to save the state billions of dollars could come at a risk to school districts if Christie's proposed reforms don't play out as envisioned. ...While Christie successfully dismantled the funding schedule, a group of retired pensioners is challenging a law freezing increases in their cost-of-living adjustments, which Moody's called a "wild card" for the health of the system..."