Operational spending at Adler Park School in Lake County is 22 percent less than the average Chicago public school.
Adler Park School is in the Libertyville SD 70 school district, where operational spending is $11,783 per year, per student.
In the Chicago Public School District (CPS), the average school spends $15,120 per year, per student.
The number of students per classroom at Adler Park School is actually fewer than at CPS. At Adler Park School, there are 21 students per classroom, while at CPS, there are 24.
However, at CPS, while schools are staffed for full enrollment, 27 percent of students are "chronically truant." That means adjusted for actual student attendance, CPS has 17.5 students per classroom.
At Adler Park School, the truancy rate is 8.7 percent.
The Chicago Teachers Union has called on state taxpayers to increase state funding to CPS by 33 percent, or to $20,000 per student. City officials are considering filing a federal lawsuit to require the rest of Illinois to provide this funding.
61.6 percent of students at Adler Park School earned a passing score on the 2015 Illinois standardized K-12 test, or PARCC exam.
On the same exam, 25 percent of CPS students earned a passing score.