1
What clubs or activities at Grayslake Central High School are worth joining?
Community prompt from u/allk12. Replies below.
Enrollment
1,375
High
DISTRICT 1,292 · STATE 834
SCHOOL COMMUNITY·GRAYSLAKE CHSD 127·NCES 171755002057
Grayslake Central High School
400 N Lake St, Grayslake, IL 60030 · (847) 986-3300 · Lake County
GRADES 09–12HIGH21-SUBURBREGULAR SCHOOL1,375 STUDENTS
A
allk12 Grade
Scored higher than 87% of Illinois public high schools
- ATest scores Share of students meeting the state standard in reading, math, and other tested subjects, 2023-24 and 2024-25.
- ·Beats expectations Not available for this school, so the grade uses the other parts.
- ·Three-year trend Not available for this school, so the grade uses the other parts.
Grades compare a school only with schools in the same state, because every state gives its own test. How grades work · Top-graded Illinois public high schools
Student : Teacher
12.9:1
106 FTE teachers
DISTRICT 12.7:1 · STATE 13.8:1
Free / Reduced Lunch
,
Title I proxy
STATE 56%
Community
5
0 members
Enrollment and student:teacher ratio compared against other high schools. Free/Reduced Lunch and demographics compared against all schools.
Enrollment by grade, 2024-25
| Grade | Students | Share |
|---|---|---|
| Grade 9 | 324 | 24% |
| Grade 10 | 325 | 24% |
| Grade 11 | 354 | 26% |
| Grade 12 | 372 | 27% |
Student demographics
60%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 62% · STATE 69% · US 70%
Student head counts by race/ethnicity from federal NCES enrollment data. District, state, and US figures are each group's share of all public school students in that area (US excludes territories). Very small groups may be suppressed in the source, so categories do not always sum exactly to total enrollment.
Gender split
Where Grayslake Central High School ranks
Among high schools| Measure | This school | In Illinois | In Lake County |
|---|---|---|---|
| Enrollment ranked largest first | 1,375 | #161 of 708 | #15 of 21 |
| Students per teacher ranked fewest first | 12.9:1 | #161 of 528 | #6 of 21 |
| Diversity index ranked most diverse first | 60.2% | #106 of 537 | #9 of 21 |
| Enrollment change since 2017-18 ranked fastest growth first | +1.6% | #178 of 191 | #7 of 8 |
Ranked against other public high schools. Online schools are left out of every list, and test-score lists leave out schools that serve specialized populations. Each rank links to the full list. Arrows under a test-score rank show places moved since the prior test year, among schools tested both years.
4-year change
SY 2020-21 vs SY 2024-25Enrollment
1,375
-4 (0%) vs 2020
+82% since 1990-91, when it was 757
Source: NCES Common Core of Data
Enrollment and staffing by year
| School year | Students | Teachers (FTE) | Students per teacher | Free and reduced lunch |
|---|---|---|---|---|
| 2024-25 | 1,375 | 106.3 | 12.9:1 | N/A |
| 2023-24 | 1,375 | 104 | 13.2:1 | N/A |
| 2022-23 | 1,419 | 102.9 | 13.8:1 | N/A |
| 2020-21 | 1,379 | N/A | N/A | N/A |
| 2017-18 | 1,353 | 93.3 | 14.5:1 | 11% (144) |
| 2015-16 | 1,438 | 91 | 15.8:1 | 11% (159) |
| 2010-11 | 1,334 | 93 | 14.3:1 | 0% (0) |
| 2000-01 | 1,661 | 95 | 17.5:1 | N/A |
| 1990-91 | 757 | 48 | 15.8:1 | N/A |
Source: NCES Common Core of Data. Rows are the federal collections on file for Grayslake Central High School.
Since 2017-18: students up 2% (1,353 to 1,375); teachers up 14% (93.3 to 106.3).
About Grayslake Central High School
Grayslake Central High School is a high-enrollment high school in Grayslake CHSD 127, located in Grayslake, Illinois. Its 1,375 students are spread across grades 9 through 12. The typical figure for high schools in Illinois is about 834 students.
Grayslake CHSD 127 has 2,583 students in 2 schools, and Grayslake Central High School is one of those schools.
By race and ethnicity, Grayslake Central High School is 58% White. After that, the student body is 22% Hispanic, 8% Asian, 6% Black, and 5% multiracial. For comparison, Lake County is about 61% White. The chance that two students picked at random at Grayslake Central High School belong to different racial or ethnic groups, known as the diversity index, is 60%.
Federal staffing data show 106.3 full-time-equivalent teachers at Grayslake Central High School and a ratio of 12.9:1. That ratio is under the 13.8:1 average for high schools in Illinois.
allk12 grades Grayslake Central High School an A. The grade compares the school only with Illinois public high schools, because each state gives its own test.
Grayslake Central High School is located in Lake County, where median household income is about $110,416, the share of adults with a bachelor's degree or higher is 48%, and about 6% of people live in poverty. Grayslake Central High School is one of 214 public schools in Lake County, which together enroll about 118,032 students.
Nearby, Grayslake Middle School is about 0.5 miles away. Grayslake Central High School is one of several public schools in the area, with at least 8 others within five miles.
Grayslake Central High School has an NCES locale of Suburb: Large.
In 2020-21, Grayslake Central High School enrolled 1,379; in 2024-25, 1,375.
Parents and students can post about school events, clubs, and volunteer needs at Grayslake Central High School. Alumni can share how the school prepared them.
Lake County at a glance
View full county profilePopulation
714,223
Census ACS
Median income
$110,416
Household, ACS
Bachelor's+
48%
Adults 25+
Poverty rate
6%
Below federal line
Schools in county
214
118,032 students
Quick facts
Related schools
Other schools in Grayslake CHSD 127
- Grayslake North High SchoolHigh · 1,208 students
Other schools in Grayslake
- Grayslake North High SchoolHigh · 1,208 students
- Frederick SchoolMiddle · 667 students
- Grayslake Middle SchoolMiddle · 641 students
- Woodview SchoolElementary · 450 students
- Prairie Crossing Charter SchoolElementary · 433 students
- Meadowview SchoolElementary · 351 students
Nearby schools
- Grayslake Middle School0.5 mi · 641
- Woodview School0.5 mi · 450
- Frederick School0.8 mi · 667
- Prairieview School1.1 mi · 400
- Grayslake Early Childhood1.1 mi · 147
- Meadowview School1.2 mi · 351
Frequently asked questions
About Grayslake Central High SchoolHow many students attend Grayslake Central High School?
Grayslake Central High School enrolls approximately 1,375 students in grades 09-12.
What age range does Grayslake Central High School serve?
Grayslake Central High School serves students from grade 09 through grade 12.
How many students per teacher at Grayslake Central High School?
Approximately 12.9:1 students per teacher at Grayslake Central High School.
How diverse is Grayslake Central High School?
Grayslake Central High School reports a student body of 58% White, 22% Hispanic, 6% Black, 8% Asian, 5% Two or more.
What district is Grayslake Central High School in?
Grayslake Central High School is part of Grayslake CHSD 127.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.