Chicago Public Schools CEO Ron Huberman and the city’s teachers union are in a tug of war over how to close an estimated $427 million deficit.

The Chicago Board of Education on Tuesday gave Huberman the power to lay off 2,700 teachers and increase class sizes as a way to plug to budget hole. But union leaders say they oppose those cost-cutting measures.

Huberman has given the Chicago Teachers Union a so-called menu of possible concessions to choose from. Neither party will reveal what’s on it. They say they’re still in discussion about how to close the district’s looming budget gap.

Incoming CTU President Karen Lewis says she wants union members to vote this summer on what kinds of concessions they’re willing to make.

LEWIS: I will ask my members to tell me what they want. That’s what real democracy is in a union. That’s what a union is.

But Lewis is on a tight deadline. CPS has to present a balanced budget by August.

RELATED: School Board Green Lights Increasing Class Sizes, Lay Offs.

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