A controversial Obama administration rating system for colleges and universities already is being scrutinized ahead of its late-December rollout by educators who claim the government’s goal of more transparency could come at the expense of schools that don't happen to fit the ivory tower model. The federal government, with its long-awaited rating system, is trying to hold the country’s 7,000 colleges and universities accountable not only to taxpayers, but also to prospective students trying to weigh the pros and cons of different institutions. But it has many in the education community on edge. Several colleges and education associations have launched...