The research nonprofit RTI International calculated these rankings using data and methodology provided by Chicago. The data are the most recent available from CPS and the Illinois State Board of Education. Because the type of data available for Chicago charter schools differs from that for noncharters, we ranked city charters separately.
What the Measures Mean
Spending per pupil is the per-student instructional expenditure, reported by district. (Because all CPS schools reported the same amount spent per student—$9,778—we excluded that figure from CPS calculations.)
Freshmen on Track is the percentage of students meeting or exceeding state benchmarks for ninth grade.
PARCC attainment is the percentage of students meeting or exceeding state standards on the PARCC exam; for each suburban school the figure has been adjusted for the school’s percentage of low-income students.
NWEA/MAP growth (math) and NWEA/MAP growth (reading) are the percentages of students meeting or exceeding the national averages for year-over-year growth on the NWEA/MAP tests. (For charters, we used the NWEA/MAP national growth percentile, which shows where a school’s year-over-year growth falls nationally.)
ACT attainment is the percentage of students scoring a 21 or higher on the ACT exam; for each suburban school the figure has been adjusted for the school’s percentage of low-income students. (For Chicago charters we used the ACT attainment percentile.)
ACT growth is the ACT national growth percentile, which shows where a school’s growth falls nationally.
5Essentials is a rubric system based on teacher and student surveys and scored from 1 to 5, with 5 indicating that a school satisfies all the rubrics.
Graduation rate is the percentage of students who graduated within five years of entering high school.
Attendance is a school’s average daily attendance.
How We Weighted the Measures
Chicago Elementary Schools
PARCC attainment 20%
NWEA/MAP growth (math) 20%
NWEA/MAP growth (reading) 20%
Chicago High Schools
Freshmen on Track 5%
PARCC attainment 10%
ACT attainment 10%
ACT growth 30%
Graduation rate 15%
Suburban Elementary Schools
Spending per pupil 20%
PARCC attainment (adjusted) 50%
Suburban High Schools
Spending per pupil 10%
Freshmen on Track 5%
PARCC attainment (adjusted) 20%
ACT attainment (adjusted) 30%
Graduation rate 10%