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B+

Crystal Lake Central High School

PublicHighGrades 9–12

45 W Franklin Ave, Crystal Lake, IL 60014 · (815) 459-2505 · Part of Community High School District 155

Algonquin Township’s School Grade B+ better than 70% of Illinois school districts

Directions
Students
1,443
Students per teacher
17:1
Free or reduced lunch
35%
Setting
Suburb
Grades
9–12
The gist

What stands out about Crystal Lake Central High School

  • Its own letter, B+: better results than 73% of Illinois’s public schools
  • Math proficiency 8 pts above the state

On the path

Where Algonquin Township kids come from and go next. The whole path →

6–84 middle schoolsDepends on your address
9–12Crystal Lake Central High SchoolYou are here

Test scores

2020–21
Math proficiency34%
State average 25.9%
Reading / language arts35%
State average 30.7%

Its own letter, B+, places these results among Illinois’s 3,406 public schools with results. Source: EDFacts via Urban Institute Education Data Portal (SY2020-21).

Location

Directions ↗

45 W Franklin Ave, Crystal Lake

Students

Enrollment by grade
Grade 9353
Grade 10364
Grade 11342
Grade 12384
Enrollment over time
1,486’20
1,545’21
1,470’22
1,498’23
1,443’24

About steady since 2020–21.

Who goes here
White 64%Hispanic 28%Asian 3%Two or more races 3%Black 2%American Indian/Alaska Native <1%Native Hawaiian/Pacific Islander <1%

As reported to NCES, share of students with a reported race or ethnicity.

Parents talk

Questions and answers about Crystal Lake Central High School from Algonquin Township families.

Other schools in Community High School District 155

The district →
Cary-Grove Community High School
High · Grades 9–12 · Cary
A
1,348 students18:1
Crystal Lake South High School
High · Grades 9–12 · Crystal Lake
A−
1,279 students16:1
Prairie Ridge High School
High · Grades 9–12 · Crystal Lake
A
1,133 students16:1

School facts: U.S. Department of Education (NCES), 2024–2025 school year. Test scores: EDFacts via Urban Institute Education Data Portal (SY2020-21). A school’s letter is our own summary of its reading and math results against Illinois’s other public schools; Algonquin Township’s School Grade is built from its districts’ results. Map: © OpenStreetMap contributors.