CTU Headquarters

The Chicago Teachers Union has to give 10 days' notice before staging a walkout.

Chicago Teachers Union spokeswoman Stephanie Gadlin accused CPS of lying and ignoring new revenue ideas.

They instead will focus on pressuring the city and state to properly fund Chicago Public Schools.

Chicago Public Schools said it has no plans to end early, despite claims by the Chicago Teachers Union.

Karen Lewis earned another three-year term as president when no one ran against her.

The union asked "all concerned Chicago citizens" to "withhold your labor" and boycott classes April 1.

The union said it wouldn't strike over furlough days, while CPS said it wouldn't cut pension payments.

The teachers' union threatened a strike if a 7 percent pension pickup is dropped; CPS said it's coming.

The earliest teachers could walk out would be May 23, the Chicago Teachers Union said.

President Karen Lewis dared CPS to impose layoffs, saying upped class sizes would cause a public outcry.

The Chicago Teachers Union easily met a threshold that 75 percent of its membership authorize a strike.

The union said CPS wants a pay freeze, $653 million in concessions, larger classes and school closings.

The Chicago Teachers Union released the results of the vote Monday.  

Unlike 2012's strike that hit the streets, this potential one would occupy banks, Karen Lewis said.

"To take a 7 percent pay cut is strike-worthy," CTU President Karen Lewis said of a "pension pickup."