Chicago’s 25,000 public school teachers went on strike for the first time in a quarter-century Monday, after the latest contract talks broke down Sunday with no deal to avert a walkout.

Chicago Teachers Union President Karen Lewis said late Sunday night there had been some progress in contract talks, but “we have failed to reach an agreement that will prevent a labor strike.”

The city’s public school teachers make an average of $71,000 a year. Both sides said they were close to an agreement on wages. What apparently remains are issues involving teacher performance and accountability, which the union saw as a threat to job security.

Late Sunday, Mayor Rahm Emanuel, who has already forced teachers to lengthen their school days, said he was “disappointed” in the union’s decision to continue with a strike.

“I am disappointed that we have come to this point, given that even all the other parties acknowledge how close we are because this is a strike of choice,” Emanuel said. “Because of how close we are, it is a strike that is unnecessary.”

After talks ended last night, Chicago Board of Education President David Vitale said he believes CPS officials made their best possible offer to teachers.

“There’s only so much money in the system. There’s only so many things that we can do that are available to us,” Vitale said. “At this juncture, it is clearly their decision. … We’ve done everything we can.”

Lewis said the two sides were close to agreement on a contract, but not close enough.

“We are not far apart on compensation, however we are apart on benefits,” Lewis said. “We want to maintain the existing health benefits.” read more…