In the 2021-22 school year, 57.2% of Cass School District 63 students failed the Math portion of the IAR test, according to the Illinois State Board of Education report.
In the 2021-22 school year, 59% of Center Cass School District 66 students failed the Math portion of the IAR test, according to the Illinois State Board of Education report.
In the 2021-22 school year, 61.1% of Winfield School District 34 students failed the Math portion of the IAR test, according to the Illinois State Board of Education report.
In the 2021-22 school year, 64.4% of Darien School District 61 students failed the Math portion of the IAR test, according to the Illinois State Board of Education report.
In the 2021-22 school year, 65.5% of Salt Creek School District 48 students failed the Math portion of the IAR test, according to the Illinois State Board of Education report.