Heritage Parent letter for parents & guardians of students in the tested grades 3rd-8th here
The Illinois Assessment of Readiness (IAR) is the state assessment and accountability measure for Illinois students enrolled in a public school district. IAR assesses the New Illinois Learning Standards Incorporating the Common Core and will be administered in English Language Arts and Mathematics.
IAR assessments in English Language Arts and Mathematics will be administered to all students in grades 3-8.
More information from the Illinois State Board of Education here