This report describes the results of a 3-year pilot study of the Illinois Model of IECMHC. The study was part of a 5-year comprehensive, coordinated, statewide initiative by The Illinois Children’s Mental Health Partnership (ICMHP) to expand IECMHC across multiple systems and settings in Illinois. That initiative began in 2014, after almost two decades of coalition building and advocacy for IECMHC, when a private foundation convened public and private stakeholders to examine early childhood mental health in the state and develop a plan to integrate consultation into early childhood systems throughout Illinois (Harris Foundation, 2016). (author abstract)