UHND.com - Notre Dame Football, Basketball, & Recruiting

among other Conservative donors...here's an excerpt from the linked overview of IPI...
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Originally founded by Greg Blankenship, the organization was relaunched by John Tillman in 2007. It expanded its work and influence after Tillman took over.[7] IPI raised $341,000 in 2007 and $6.4 million in 2016.[8] In 2018, the Chicago Sun-Times wrote that "Its studies and opinion pieces on cutting government spending and boosting transparency became must-read material to many Republicans, some Democrats — and the governor of Illinois."[8] IPI was described by ProPublica Illinois as "arguably the most influential conservative organization in the state."[9] The Chicago Sun-Times described the group as "leading a crusade against government regulations, state spending and labor unions in Illinois."[10]

IPI formerly operated the Illinois News Network, transferring ownership of that entity to the Franklin Center for Government and Public Integrity in January 2018. IPI has received financial support from charitable foundations associated with the Koch, Mercer, Uihlein, and Rauner families.[11]
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Here's another IPI rant on the same issue from over a decade ago...when, in fact, they cherry picked districts, and misstated inflation numbers to make their case. In fact, Illinois/Chicago teachers are by no means among the top teacher salary group throughout the nation.

https://www.illinoispolicy.org/chicago-public-school-teachers-are-overpaid/

Basically, this is all part of a ploy to privatize...and monetize...public education.


Link: https://en.m.wikipedia.org/wiki/Illinois_Policy_Institute