On Wednesday September 25th, Chicago Public Schools Chief Information Officer Phil DiBartolo confirmed that Illinois' largest school district, Chicago Public Schools, was also part of the Pearson AIMSweb data breach that Pearson first announced in July.

In July Pearson began notifying 13,000 school districts and universities that its AIMSweb product was breached in November 2018. Pearson discovered the breach in March. We're keeping a running list of Illinois school districts known to be affected by the breach below.