Serving 275 students in grades 9-12, Gcms High School ranks in the top 50% of all schools in Illinois for overall test scores (math proficiency is top 50%, and reading proficiency is top 50%).
The percentage of students achieving proficiency in math is 20-24% (which is lower than the Illinois state average of 27%). The percentage of students achieving proficiency in reading/language arts is 30-34% (which is approximately equal to the Illinois state average of 30%).
The student-teacher ratio of 12:1 is lower than the Illinois state level of 13:1.
Minority enrollment is 10% of the student body (majority Hispanic), which is lower than the Illinois state average of 55% (majority Hispanic).
Quick Facts (2026-27)
- Grades: 9-12
- Enrollment: 275 students
- Student-Teacher Ratio: 12:1
- Minority Enrollment: 10%
- Graduation Rate: ≥95% (Top 10% in IL)
- Overall Testing Rank: Top 50%
- Math Proficiency: 20-24% (Top 50%)
- Reading Proficiency: 30-34% (Top 50%)
- Science Proficiency: 55-59% (Top 50%)
- Attendance Zone: GCMS High School's attendance zone covers the entire district in Gibson City, IL, encompassing approximately 222.9 square miles. Families typically drive 15-20 minutes to reach the school, with an average distance of 8.8 miles from the school to the zone's edge, extending up to 13.6 miles at its furthest point.
- Source: National Center for Education Statistics (NCES), IL Dept. of Education
Top Rankings
Gcms High School ranks among the top 20% of public schools in Illinois for:
Category
Attribute
Most improved public schools
Graduation Rate
School Overview
Gcms High School's student population of 275 students has stayed relatively flat over five school years.
The teacher population of 23 teachers has declined by 8% over five school years.
Grades Offered
Grades 9-12
Total Students
275 students
Total Classroom Teachers
23 teachers
School Calendar
School Rankings
Gcms High School ranks within the top 50% of all 3,542 schools in Illinois (based off of combined math and reading proficiency testing data).
The diversity score of Gcms High School is 0.19, which is less than the diversity score at state average of 0.70. The school's diversity has stayed relatively flat over five school years.
Overall Testing Rank
#1462 out of 3542 schools
(Top 50%)
(Top 50%)
Math Test Scores (% Proficient)
20-24%
27%
Reading/Language Arts Test Scores (% Proficient)
30-34%
30%
Science Test Scores (% Proficient)
55-59%
50%
Student-Teacher Ratio
12:1
13:1
American Indian
n/a
n/a
Asian
2%
6%
Hispanic
4%
29%
Black
1%
16%
White
90%
45%
Hawaiian
n/a
n/a
Two or more races
3%
4%
All Ethnic Groups
Graduation Rate
≥95%
87.6%
Chronically Absent Students
(22-23)19.6%
29.7%
Eligible for Free Lunch
28%
43%
Eligible for Reduced Lunch
11%
4%
School Statewide Testing
School District Name
Source: National Center for Education Statistics (NCES), IL Dept. of Education
Frequently Asked Questions
What is Gcms High School's ranking?
Gcms High School is ranked #1462 out of 3,542 schools, which ranks it among the top 50% of public schools in Illinois.
What schools are Gcms High School often compared to?
Gcms High Schoolis often viewed alongside schools like Eureka High School, Lexington High School by visitors of our site.
What percent of students have achieved state testing proficiency in math and reading?
20-24% of students have achieved math proficiency (compared to the 27% IL state average), while 30-34% of students have achieved reading proficiency (compared to the 30% IL state average).
What is the graduation rate of Gcms High School?
The graduation rate of Gcms High School is 95%, which is higher than the Illinois state average of 87.6%.
How many students attend Gcms High School?
275 students attend Gcms High School.
What is the racial composition of the student body?
90% of Gcms High School students are White, 4% of students are Hispanic, 3% of students are Two or more races, 2% of students are Asian, and 1% of students are Black.
What is the student-teacher ratio of Gcms High School?
Gcms High School has a student ration of 12:1, which is lower than the Illinois state average of 13:1.
What grades does Gcms High School offer ?
Gcms High School offers enrollment in grades 9-12
What school district is Gcms High School part of?
Gcms High School is part of Gibson City-Melvin-Sibley CUSD 5 School District.
School Reviews
Review Gcms High School. Reviews should be a few sentences in length. Please include any comments on:
- Quality of academic programs, teachers, and facilities
- Availability of music, art, sports and other extracurricular activities
Recent Articles
School Leadership Matters: Evaluating a Principal
Learn how to evaluate a public school principal before enrolling by examining leadership stability, teacher support, communication, school culture, instructional priorities, discipline, family engagement, and measurable improvement efforts.
Comparing Before- and After-School Programs
Learn how to compare before- and after-school programs when choosing a public school, including hours, costs, staffing, safety, activities, enrollment rules, transportation, meals, and daily convenience for families.
Choosing a Public School During Budget Uncertainty
Learn which questions parents should ask when choosing a public school during budget uncertainty, including staffing, programs, class sizes, transportation, reserves, enrollment trends, and planned reductions ahead.
