The Chicago Teachers Union has ousted a member for life for allegedly feeding information about a union meeting to a public schools official.
They said Marc Wigler fed labor relations chief Rachel Resnick information about an internal union meeting.
Accusers said he sent an email detailing what union officials told delegates during the August meeting, which was about how to respond to the school system's insistence that it couldn't afford a raise.
Union vice president Jesse Sharkey said one of the things Wigler mentioned was that delegates were told to stop telling Chicago Public Schools officials everything going on in the union.
Wigler, who is a resource teacher, declined to comment Tuesday. His lawyer, Andy Staes, said Wigler plans to appeal his banishment.
Wigler's attorney said that he's only been ousted because of a grudge - not because of spying on the union.
Staes said Resnick is a friend of Wigler, and the email wasn't harmful to the union.
The ban means Wigler cannot vote in CTU elections or attend meetings.
(The Associated Press contributed to this report.)