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.

Crystal Lake, IL School Staffing — Teacher Counts & Ratios

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

18.7:1

Avg Teacher Salaryi

$76K

Local Median Incomei

$108K

By District

CUSD 300Unit District · 20,392 students

Teachers earn an average of $73K. 92.1% returned from the prior year.

Staff Breakdowni

1466 total FTE

1420 Teachers (97%)

47 Counselors (3%)

Teachers

Student:Teacher

19:1

Avg Salary

$73K

12.9 yrs avg experience

Retention ratei92.1%

Attendance ratei92.1%

Administration

Avg Salary

$121K

Support Staff

Counselorsi

46.8

1 per 436 students

Teacher Credentials

Novice teachersi6.6%

Out-of-fieldi3.6%

Provisional licensei3.2%

Crystal Lake CCSD 47Elementary District · 6,872 students

Teachers earn an average of $68K. 87.1% returned from the prior year.

Staff Breakdowni

569 total FTE

555 Teachers (98%)

14 Counselors (2%)

Teachers

Student:Teacher

17:1

Avg Salary

$68K

12.5 yrs avg experience

Retention ratei87.1%

Attendance ratei87.1%

Administration

Avg Salary

$119K

Support Staff

Counselorsi

13.8

1 per 498 students

Teacher Credentials

Novice teachersi8.6%

Out-of-fieldi2.6%

Provisional licensei5.8%

Woodstock CUSD 200Unit District · 6,111 students

Teachers earn an average of $71K. 91.7% returned from the prior year.

Staff Breakdowni

430 total FTE

414 Teachers (96%)

16 Counselors (4%)

Teachers

Student:Teacher

19:1

Avg Salary

$71K

13.2 yrs avg experience

Retention ratei91.7%

Attendance ratei91.7%

Administration

Avg Salary

$124K

Support Staff

Counselorsi

15.7

1 per 389 students

Teacher Credentials

Novice teachersi4.1%

Out-of-fieldi1.5%

Provisional licensei3%

CHSD 155High School District · 5,196 students

Teachers earn an average of $109K. 94% returned from the prior year.

Staff Breakdowni

338 total FTE

318 Teachers (94%)

20 Counselors (6%)

Teachers

Student:Teacher

20:1

Avg Salary

$109K

18 yrs avg experience

Retention ratei94%

Attendance ratei94%

Administration

Avg Salary

$145K

Support Staff

Counselorsi

1 per 260 students

Teacher Credentials

Novice teachersi3.1%

Out-of-fieldi2.2%

Prairie Grove CSD 46Elementary District · 896 students

Teachers earn an average of $59K. 88.6% returned from the prior year.

Staff Breakdowni

77 total FTE

75 Teachers (97%)

2 Counselors (3%)

Teachers

Student:Teacher

15:1

Avg Salary

$59K

12.1 yrs avg experience

Retention ratei88.6%

Attendance ratei88.6%

Administration

Avg Salary

$131K

Support Staff

Counselorsi

2.4

1 per 373 students

Teacher Credentials

Novice teachersi6%

Out-of-fieldi1.8%