The Chicago Teachers Union spent $1.74 million on its endorsed school board candidates. But most of them were defeated, signaling the unpopularity of CTU and Mayor Brandon Johnson.

The Acero Schools charter network is closing seven of its 15 charter schools in the Chicago Public Schools district. Blame the Chicago Teachers Union’s history of opposition to charter schools for spurring the school closures.

Years of exorbitant political spending in Illinois – more than $24.3 million since 2010 – has secured an enormous amount of political influence for the Chicago Teachers Union. It is now the main political player not just in Chicago, but across the state.