Chicago school teachers picket outside Lane Tech College Prep High School on September 11, 2012 in Chicago, Illinois. More than 26,000 teachers and support staff hit the picket lines yesterday after the Chicago Teachers Union failed to reach an agreement with the city on compensation, benefits and job security. With about 350,000 students, the Chicago school district is the third largest in the United States. (Photo by Scott Olson/Getty Images)

CHICAGO (AP) — The president of the Chicago Teachers Union says teachers and the school district are still far apart in their contract dispute and that the walkout will almost certainly extend into a third day on Wednesday.

Representatives from the union and the district returned to the bargaining table Tuesday, but union President Karen Lewis says only six of 48 articles in the contract have been resolved.

She says it’s “lunacy” to think a settlement could be reached Tuesday. School board officials insisted the two sides should be able to make an agreement.

More than 25,000 teachers walked out of the classroom Monday over issues that include performance evaluations and recall rights for laid-off teachers.

The strike has idled more than 350,000 students in the nation’s third-largest district.

Copyright 2012 The Associated Press.