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.

Grayslake, 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 $114K, providing context for local cost of living.

Student:Teacheri

16.6:1

Avg Teacher Salaryi

$86K

Local Median Incomei

$114K

By District

Woodland CCSD 50Elementary District · 4,526 students

Teachers earn an average of $79K. 91.5% returned from the prior year.

Teachers

Student:Teacher

16:1

Avg Salary

$79K

16.8 yrs avg experience

Retention ratei91.5%

Attendance ratei91.5%

Administration

Avg Salary

$127K

Teacher Credentials

Novice teachersi5.6%

Out-of-fieldi2.9%

Provisional licensei6.7%

Grayslake CCSD 46Elementary District · 3,501 students

Teachers earn an average of $70K. 86.9% returned from the prior year.

Teachers

Student:Teacher

16:1

Avg Salary

$70K

13.5 yrs avg experience

Retention ratei86.9%

Attendance ratei86.9%

Administration

Avg Salary

$129K

Teacher Credentials

Novice teachersi8%

Provisional licensei8.6%

Warren Twp HSD 121High School District · 3,394 students

Teachers earn an average of $110K. 95.1% returned from the prior year.

Staff Breakdowni

240 total FTE

226 Teachers (94%)

14 Counselors (6%)

Teachers

Student:Teacher

18:1

Avg Salary

$110K

18.1 yrs avg experience

Retention ratei95.1%

Attendance ratei95.1%

Administration

Avg Salary

$158K

Support Staff

Counselorsi

1 per 242 students

Teacher Credentials

Novice teachersi2.7%

Out-of-fieldi4.5%

Provisional licensei2.7%

Grayslake CHSD 127High School District · 2,479 students

Teachers earn an average of $88K. 89.6% returned from the prior year.

Staff Breakdowni

209 total FTE

200 Teachers (96%)

9 Counselors (4%)

Teachers

Student:Teacher

14:1

Avg Salary

$88K

16 yrs avg experience

Retention ratei89.6%

Attendance ratei89.6%

Administration

Avg Salary

$151K

Support Staff

Counselorsi

9.1

1 per 272 students

Teacher Credentials

Novice teachersi5.9%

Out-of-fieldi3.8%

Provisional licensei1%

Lake Villa CCSD 41Elementary District · 2,316 students

Teachers earn an average of $67K. 89.8% returned from the prior year.

Staff Breakdowni

177 total FTE

176 Teachers (99%)

1 Counselors (1%)

Teachers

Student:Teacher

18:1

Avg Salary

$67K

14 yrs avg experience

Retention ratei89.8%

Attendance ratei89.8%

Administration

Avg Salary

$136K

Support Staff

Counselorsi

1 per 2316 students

Teacher Credentials

Novice teachersi9.3%

Out-of-fieldi0.3%

Provisional licensei4.3%

Mundelein Cons HSD 120High School District · 2,255 students

Teachers earn an average of $104K. 92.6% returned from the prior year.

Staff Breakdowni

150 total FTE

142 Teachers (95%)

8 Counselors (5%)

Teachers

Student:Teacher

20:1

Avg Salary

$104K

14.9 yrs avg experience

Retention ratei92.6%

Attendance ratei92.6%

Administration

Avg Salary

$152K

Support Staff

Counselorsi

1 per 282 students

Teacher Credentials

Novice teachersi9%

Out-of-fieldi2.7%

Provisional licensei0.7%

Libertyville SD 70Elementary District · 2,160 students

Teachers earn an average of $91K. 96.4% returned from the prior year.

Teachers

Student:Teacher

15:1

Avg Salary

$91K

17 yrs avg experience

Retention ratei96.4%

Attendance ratei96.4%

Administration

Avg Salary

$151K

Teacher Credentials

Novice teachersi1.1%

Out-of-fieldi4.7%

Fremont SD 79Elementary District · 2,060 students

Teachers earn an average of $79K. 89% returned from the prior year.

Staff Breakdowni

143 total FTE

142 Teachers (99%)

1 Counselors (1%)

Teachers

Student:Teacher

16:1

Avg Salary

$79K

14.7 yrs avg experience

Retention ratei89%

Attendance ratei89%

Administration

Avg Salary

$146K

Support Staff

Counselorsi

1 per 2060 students

Teacher Credentials

Novice teachersi5.8%

Provisional licensei1%