High · Regular · Grades 9 to 12
Grayslake Central High School, Grayslake, IL
Grayslake Central High School is a public high school in Grayslake, part of Grayslake CHSD 127 School District. It enrolled 1,375 students in 2024-25, with 13.0 students per full-time teacher.
Enrollment and teachers
- Students
- 1,375
- Teachers (FTE)
- 106.0
- Students per teacher
- 13.0
- Grades
- 9 to 12
This school's ratio is about the same as the district figure of 12.8. The Illinois average across schools is 13.7. Ratios count all teachers, including specialists, so they are lower than typical class sizes.
This school13.0
District12.8
Illinois13.7
United States15.3
School details
- Address
- 400 N Lake St, Grayslake, IL 60030
- Phone
- (847)986-3300
- County
- Lake County
- Level
- High
- Type
- Regular
- Status
- Open
- Charter
- No
- Virtual
- No
- Locale
- Suburb: Large
- NCES school ID
- 171755002057
Related schools
Other high schools in Grayslake CHSD 127 School District
- Grayslake North High School 1,208 students
High schools elsewhere in Grayslake
- Lake Co Collaborative Alop Lake ROE
- Lake Co High Schools Tech Campus Lake ROE
We publish official enrollment and staffing data, not ratings or test scores.
Source: NCES Common Core of Data 2024-25 and F-33 finance 2020, via the Urban Institute Education Data Portal. Last reviewed October 2026. Blank values are not available, not applicable or suppressed in the source. See the methodology.