Enrollment
2,216
Illinois · 2024-25 NCES data
High school (grades 9-12) · Rockford, IL
Guilford High School
Federal NCES profile for Guilford High School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 29/100.
2024-25 NCES dataHigh school (grades 9-12)NCES 173451003577
👥 S:T ratio 18
📚 AP courses 40
🌟 Gifted program 30
🎓 Counselors 26
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Guilford High School earns 29/100 on the Resource Investment Index, with class sizes larger than 97% of Illinois schools. It is also one of the largest schools in Illinois.
- #4 of 5
- high schools in Rockford · Resource Index
- 29
- Resource Index · Lower
- 20.5:1
- large classes for Illinois
- 2,216
- students enrolled
Guilford High School has class sizes larger than 97% of Illinois schools. Computed live against every Illinois school reporting to NCES.
By Resource Investment Index, Guilford High School ranks #4 of 5 high schools in Rockford, IL.
School address
District: Rockford Sd 205 · Illinois
NCES ID 173451003577 Verify on NCES CCD record →
Teachers (FTE)
101.0
Federal CCD staff survey
Students per teacher
20.5:1
vs 14:1 Illinois avg
+46% vs state
Student-teacher ratio in context
How Guilford High School compares with Illinois and U.S. medians
What stands out at Guilford High School
Guilford High School is a large high school in Rockford, Illinois, enrolling 2,216 students.
Class loads run heavy: 20.5:1 is larger than about 97% of Illinois schools and 46% above the 14:1 state mean, so each teacher carries more students than is typical.
By headcount it is one of the larger campuses in Illinois, bigger than 98% of state schools at 2,216 students.
Its Resource Investment Index lands in the lower third of 3,845 scored Illinois schools.
Its student body is led by White (35%) and African American (29%), more mixed than most schools in the state (diversity index 73/100).
On the academic-pipeline side it reports 8 Advanced Placement courses.
Counselor availability sits well past the ASCA benchmark, roughly 369 students sharing each counselor, though short of the most stretched campuses.
Among Rockford's high schools, it stands alongside Jefferson High School (2,173 students): Guilford High School is larger than that campus by headcount and runs leaner classes (20.5:1 vs 23:1).
Rockford Sd 205 also operates Jefferson High School (2,173 students) and Auburn High School (1,957 students) alongside Guilford High School.
Sourced from NCES CCD, CRDC, and F-33 (federal records, not a quality verdict). How we source and compute this.
Source: National Center for Education Statistics Common Core of Data + CRDC + F-33 · 2024-25
How Guilford High School compares
Guilford High School on the metrics families compare, against Illinois and U.S. means.
| Metric | This school | vs Illinois | Illinois avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 20.5:1 | ▲ 46% | 14:1 | 15.7:1 |
| Enrollment | 2,216 | top 2% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
20.5:1
Leaner classes than 14% of US schools, heavier class loads than most.
2,216
Bigger than 99% of US schools by enrollment, a large campus nationally.
Equity indicators (what these measure)
Staffing depth
20.5:1
students per teacher
- 46% above state mean
Top 97% in Illinois - lower ratio than 3% of state schools
Above 20:1, running heavier than the typical U.S. public school; staffing is comparatively stretched.
Funding equity
$17,721
per pupil, district-wide
- above Illinois avg of $17,042
Somewhat above the U.S. public-school average, reflecting higher local or state investment per enrolled student.
Support staff
Counselors6.0 FTE
Per 369 students, the combined health-and-guidance staffing load for this school.
Discipline context
12
in-school suspensions + 19 out-of-school
Suspension rate: 0.5 per 100 students. Combined in-school and out-of-school rate: 1.4 per 100 students. Reported via the Civil Rights Data Collection.
Overview
Enrollment 2,216 Top 2% in Illinois - larger than 98% of 3,845 state schools
Teachers (FTE) 101.0
Students per teacher 20.5:1 +46% vs state
Free-lunch eligible -
NCES ID 173451003577
Student demographics
White 35.3%
African American 28.9%
Hispanic or Latino 24.5%
Two or More 7.9%
Asian 3.2%
American Indian / Alaska Native 0.1%
Native Hawaiian / Pacific Islander 0.1%
Largest group: White at 35.3% of enrollment.
Student-body diversity index 72.5/100
Simpson diversity index - at 72.5, Guilford High School is more mixed than the Illinois school average of 38.9.
Programs & staff
AP courses offered 8
Counselors (FTE) 6.0
Students per counselor 369:1
Discipline & special education
In-school suspensions 12
Out-of-school suspensions 19
Funding & spending
District-wide per-pupil expenditure for Rockford Sd 205, which includes Guilford High School.
$17,721
Per student
+4%
vs Illinois
Avg $17,042
+7%
vs U.S.
Avg $16,593
Revenue mix
Local 38.0%
State 49.1%
Federal 13.0%
Source: NCES F-33 School District Finance Survey District-level finance · FY 2021-22 Per-pupil expenditure reflects the district-wide average. Individual school budgets are not reported at the federal level.
How Guilford High School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Jefferson High School | Similar size | No free-lunch data | Higher S:T ratio |
| Auburn High School | Similar size | No free-lunch data | Similar S:T ratio |
| Rockford East High School | Similar size | No free-lunch data | Similar S:T ratio |
| Rockford Envrnmntl Science Acad | Smaller | No free-lunch data | Lower S:T ratio |
| Eisenhower Middle School | Smaller | No free-lunch data | Similar S:T ratio |
Comparisons are relative to Guilford High School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 2,173
- Students per teacher
- 23:1
- Resource Index
- 22/100
- Enrollment
- 1,957
- Students per teacher
- 20.2:1
- Resource Index
- 47/100
- Enrollment
- 1,719
- Students per teacher
- 19.1:1
- Resource Index
- 35/100
- Enrollment
- 1,108
- Students per teacher
- 15:1
- Resource Index
- 29/100
- Enrollment
- 963
- Students per teacher
- 20.4:1
- Resource Index
- 21/100
Similar high schools in Rockford
4 comparable high schools (grades 9-12) serving the same city.
Jefferson High School
Standard public school
2,173 students 23:1 students per teacher
Auburn High School
Standard public school
1,957 students 20.2:1 students per teacher
Rockford East High School
Standard public school
1,719 students 19.1:1 students per teacher
Roosevelt Center
Standard public school
60 students 1.6:1 students per teacher
Next steps
Verify locally before acting on Guilford High School's federal record.
- Compare Guilford High School against another school. Compare schools
- Rockford Sd 205's spending and staffing shape this school. District profile
- Confirm current enrollment and boundaries with the school. Choosing guide
Federal record (CCD 2024-25, CRDC 2021-22) - PlainSchools assigns no subjective rating; the composite quality score is a transparent, reproducible index computed from this cited federal data.
Frequently asked questions about Guilford High School
How many students attend Guilford High School?
Guilford High School has 2,216 students enrolled. It is a high school in Rockford, IL.
What is the student-teacher ratio at Guilford High School?
The student-teacher ratio at Guilford High School is 20.5:1, which is 46% higher than the Illinois average of 14:1 and 31% higher than the national average of 15.7:1.
What is the racial and ethnic makeup of Guilford High School?
The largest demographic group at Guilford High School is White at 35.3% of enrollment, in Rockford, IL. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 72.5/100.
What is the Resource Investment Index for Guilford High School?
Guilford High School has a Resource Investment Index of 29/100 (lower reported resources relative to schools nationally) based on 4 factors: student-teacher ratio, AP course offerings, counselor availability. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Guilford High School rank among high schools in Rockford?
By Resource Investment Index, Guilford High School ranks #4 of 5 high schools in Rockford, IL. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all high schools in Rockford on the city page.
Is Guilford High School a good school?
Guilford High School earns 29/100 on the Resource Investment Index, with class sizes larger than 97% of Illinois schools. It is also one of the largest schools in Illinois. This is a resource snapshot, not an academic rating; see the Resource Investment Index question above for what the number does and doesn't measure.
What other schools are in Rockford Sd 205?
Besides Guilford High School, Rockford Sd 205 also operates Jefferson High School (2,173 students), Auburn High School (1,957 students), and Rockford East High School (1,719 students). See the Rockford Sd 205 district page for the complete list.