From The Chicago Tribune: Chicago teachers this week will vote on a contract their union agreed to after a seven-day strike. How the cash-strapped school district will pay for the raises and other financial provisions of that contract has yet to be fully explained, a point driven home when a leading bond-rating agency downgraded Board of Education debt last week. “The negative outlook reflects our view that the district will be hard-pressed to make the budget adjustments necessary to close an estimated $1 billion budget gap for fiscal 2014,” Moody’s Investors Service said in a news release. “In particular, the duration of the recent CTU strike demonstrates that labor issues may continue to be a ratings factor.”