What does the student-to-teacher ratio tell me?

The student-to-teacher ratio is the number of students divided by the number of full-time equivalent (FTE) teachers. Lower ratios generally mean smaller class sizes and more individual attention, though the ratio does not directly equal class size since teachers have planning periods and may teach specialized subjects.

What types of staff are included?

School staff includes classroom teachers, special education teachers, instructional aides, counselors, administrators, librarians, nurses, social workers, psychologists, and support staff. The staffing breakdown shows how the district allocates its workforce across these roles.

Where does school staffing data come from?

Staffing data is reported annually by school districts to the state Board of Education as part of the School Report Card. It includes full-time equivalent counts, teacher qualifications, experience levels, and salary information.

Bolingbrook, IL School Staffing — Teacher Counts & Ratios

CSAChicago-Naperville MSAChicago-Naperville-Elgin#12/341 Population

Select Your District

Your assigned district depends on your home address within town.

School Staff — 2025i

NCES

Who teaches and supports students in your school districts. The median household income here is $108K, providing context for local cost of living.

Student:Teacheri

17.9:1

Avg Teacher Salaryi

$87K

Local Median Incomei

$108K

By District

Indian Prairie CUSD 204Unit District · 25,932 students

Teachers earn an average of $99K. 93.8% returned from the prior year.

Staff Breakdowni

1843 total FTE

1794 Teachers (97%)

49 Counselors (3%)

Teachers

Student:Teacher

19:1

Avg Salary

$99K

16.2 yrs avg experience

Retention ratei93.8%

Attendance ratei93.8%

Administration

Avg Salary

$166K

Support Staff

Counselorsi

1 per 529 students

Teacher Credentials

Novice teachersi3.9%

Out-of-fieldi1%

Provisional licensei0.9%

Plainfield SD 202Unit District · 24,411 students

Teachers earn an average of $66K. 89.5% returned from the prior year.

Staff Breakdowni

1727 total FTE

1699 Teachers (98%)

29 Counselors (2%)

Teachers

Student:Teacher

17:1

Avg Salary

$66K

13.4 yrs avg experience

Retention ratei89.5%

Attendance ratei89.5%

Administration

Avg Salary

$114K

Support Staff

Counselorsi

28.6

1 per 854 students

Teacher Credentials

Novice teachersi8.5%

Out-of-fieldi1%

Provisional licensei4.1%

Naperville CUSD 203Unit District · 15,899 students

Teachers earn an average of $94K. 92.6% returned from the prior year.

Staff Breakdowni

1215 total FTE

1177 Teachers (97%)

38 Counselors (3%)

Teachers

Student:Teacher

16:1

Avg Salary

$94K

14.6 yrs avg experience

Retention ratei92.6%

Attendance ratei92.6%

Administration

Avg Salary

$135K

Support Staff

Counselorsi

1 per 418 students

Teacher Credentials

Novice teachersi3.3%

Out-of-fieldi0.7%

Provisional licensei0.3%

Valley View CUSD 365UUnit District · 14,529 students

Teachers earn an average of $83K. 91% returned from the prior year.

Staff Breakdowni

1212 total FTE

1176 Teachers (97%)

36 Counselors (3%)

Teachers

Student:Teacher

19:1

Avg Salary

$83K

13.8 yrs avg experience

Retention ratei91%

Attendance ratei91%

Administration

Avg Salary

$120K

Support Staff

Counselorsi

35.9

1 per 405 students

Teacher Credentials

Novice teachersi3.9%

Out-of-fieldi0.2%

Provisional licensei1.7%

CHSD 99High School District · 4,598 students

Teachers earn an average of $119K. 94.5% returned from the prior year.

Staff Breakdowni

346 total FTE

326 Teachers (94%)

20 Counselors (6%)

Teachers

Student:Teacher

19:1

Avg Salary

$119K

17.6 yrs avg experience

Retention ratei94.5%

Attendance ratei94.5%

Administration

Avg Salary

$159K

Support Staff

Counselorsi

1 per 230 students

Teacher Credentials

Novice teachersi2%

Out-of-fieldi4.8%

Provisional licensei0.6%

Woodridge SD 68Elementary District · 2,872 students

Teachers earn an average of $89K. 93.6% returned from the prior year.

Staff Breakdowni

235 total FTE

234 Teachers (100%)

1 Counselors (0%)

Teachers

Student:Teacher

17:1

Avg Salary

$89K

14.3 yrs avg experience

Retention ratei93.6%

Attendance ratei93.6%

Administration

Avg Salary

$175K

Support Staff

Counselorsi

1 per 2872 students

Teacher Credentials

Novice teachersi6.1%

Out-of-fieldi0.1%

Provisional licensei2.1%

Lemont-Bromberek CSD 113AElementary District · 2,661 students

Teachers earn an average of $67K. 86.8% returned from the prior year.

Teachers

Student:Teacher

20:1

Avg Salary

$67K

11.5 yrs avg experience

Retention ratei86.8%

Attendance ratei86.8%

Administration

Avg Salary

$125K

Teacher Credentials

Novice teachersi4.6%

Out-of-fieldi1.7%

Lemont Twp HSD 210High School District · 1,276 students

Teachers earn an average of $100K. 92.2% returned from the prior year.

Staff Breakdowni

93 total FTE

88 Teachers (95%)

5 Counselors (5%)

Teachers

Student:Teacher

18:1

Avg Salary

$100K

18.9 yrs avg experience

Retention ratei92.2%

Attendance ratei92.2%

Administration

Avg Salary

$164K

Support Staff

Counselorsi

4.9

1 per 260 students

Teacher Credentials

Novice teachersi1.1%

Out-of-fieldi5.2%