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Schools›Illinois›Rockford
SCHOOL COMMUNITY·ROCKFORD SD 205·NCES 173451003577

Guilford High School

5620 Spring Creek Rd, Rockford, IL 61114 · (815) 654-4870 · Winnebago County
GRADES 09–12HIGH12-CITYTITLE IREGULAR SCHOOL2,216 STUDENTS
Enrollment
2,216
High
DISTRICT 1,625 · STATE 834
Student : Teacher
19.5:1
114 FTE teachers
DISTRICT 15.2:1 · STATE 13.8:1
Free / Reduced Lunch
59%
1,301 students
DISTRICT 71% · 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

GradeStudentsShare
Grade 977935%
Grade 1055425%
Grade 1144920%
Grade 1243420%
Student demographics
72%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 73% · STATE 69% · US 70%
White
78335%
DISTRICT 24% · STATE 45% · US 43%
Hispanic
54224%
DISTRICT 33% · STATE 29% · US 30%
Black
64129%
DISTRICT 31% · STATE 16% · US 15%
Asian
723%
DISTRICT 4% · STATE 6% · US 6%
Two+
1748%
DISTRICT 8% · STATE 5% · US 5%
Native American
20%
DISTRICT 0% · STATE 0% · US 1%
Pacific Islander
20%
DISTRICT 0% · STATE 0% · US 0%
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
Male
1,15952%
Female
1,05748%

Discussions

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BeatsExpectations

Demographically-adjusted score · methodology
Tier
AS EXPECTED
Performing as predicted given the school's student profile
Actual proficiency
27.2%
composite math + reading, all grades
Predicted
37.6%
based on IL schools with similar FRL share
Beats by
-10.4pp
below demographic expectation

What this means: About 27% of students here test proficient in math and reading, compared with the roughly 38% typical for Illinois schools with a similar share of low-income students. BeatsExpectations measures results against demographically similar schools rather than by raw scores, and this school falls within the typical range, neither among Illinois's top nor bottom 10%.

BeatsExpectations runs a per-state regression of proficiency on free/reduced-lunch share, then scores each school by residual. How this is calculated →

Where Guilford High School ranks

Among high schools
MeasureThis schoolIn IllinoisIn Winnebago County
State test proficiency
ranked highest first
27.2%#384 of 573#8 of 10
Enrollment
ranked largest first
2,216#60 of 708#1 of 11
Students per teacher
ranked fewest first
19.5:1#515 of 528#8 of 9
Diversity index
ranked most diverse first
72.4%#18 of 537#2 of 9
Free and reduced lunch
ranked highest share first
58.7%#214 of 578#5 of 10
Enrollment change since 2017-18
ranked fastest growth first
+27.1%#20 of 191#2 of 6
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.

4-year change

SY 2020-21 vs SY 2024-25
Enrollment
2,216
+246 (+12%) vs 2020
+32% since 1990-91, when it was 1,680
Source: NCES Common Core of Data

Enrollment and staffing by year

School yearStudentsTeachers (FTE)Students per teacherFree and reduced lunch
2024-252,216113.619.5:159% (1,301)
2023-242,161109.319.8:160% (1,287)
2022-232,071101.620.4:152% (1,087)
2020-211,970N/AN/AN/A
2017-181,74494.418.5:140% (695)
2015-161,6779417.8:150% (835)
2010-112,02810718.9:169% (1,394)
2000-011,7729618.5:1N/A
1990-911,6809417.9:1N/A
Source: NCES Common Core of Data. Rows are the federal collections on file for Guilford High School.

About Guilford High School

Guilford High School is a high school located in Rockford, Illinois, in Winnebago County. It offers grades 9 through 12 and has 2,216 students enrolled. It has 166% more students than the average for high schools in Illinois (about 834).

Besides Guilford High School, Rockford SD 205 runs 43 other schools. The district enrolls 28,467 students.

Of every 100 students at Guilford High School, about 35 are White, the largest group. Smaller groups are 29% Black, 24% Hispanic, 8% multiracial, and 3% Asian. For comparison, the population of Winnebago County is roughly 66% White. On a 0 to 100 scale, the school's diversity index is 72, compared with 70 nationally.

Teacher count: 113.6 full-time equivalents. Student-to-teacher ratio: 19.5:1. The average for high schools in Illinois, 13.8:1, is lower. Roughly 59% of students come from households that qualify for free or reduced-price lunch. That is in line with the 61% average for public schools in Winnebago County.

On the allk12 BeatsExpectations measure, Guilford High School is 10.4 points below the average proficiency rate across its state test results predicted for its free or reduced-price lunch share: 27.2% actual, 37.6% predicted. That is outside both the top and bottom 10% in Illinois.

In the wider Winnebago County area, the median household earns about $65,837 a year, a bachelor's degree or higher is held by about 25% of adults, and the poverty rate is about 11%. Across Winnebago County, 94 public schools serve about 44,103 students.

Guilford High School's nearest public school is Spring Creek Elementary School (about 0.4 miles). The count of other public schools within five miles is at least 8. Guilford High School is 6th of 9 nearby schools by average proficiency rate.

Guilford High School has an NCES locale of City: Mid-size.

Since 2020-21, enrollment has grown 12%, from 1,970 to 2,216.

Use the discussion section to ask about homework, tutoring, and testing dates at Guilford High School. Current and former families are welcome to add their experience.

Winnebago County at a glance

View full county profile
Population
283,292
Census ACS
Median income
$65,837
Household, ACS
Bachelor's+
25%
Adults 25+
Poverty rate
11%
Below federal line
Schools in county
94
44,103 students

Quick facts

School name
Guilford High School
District
Rockford SD 205
Address
5620 Spring Creek Rd, Rockford, IL 61114
Phone
(815) 654-4870
County
Winnebago County
Level
High
Grade range
09–12
Total enrollment
2,216
Teachers (FTE)
114
Student–teacher ratio
19.5:1
Free and reduced lunch
1,301 (59%)
Locale
12-City: Mid-size
NCES ID
173451003577
Charter school
No
Virtual school
No

Related schools

Other schools in Rockford SD 205
Other schools in Rockford
Nearby schools

Frequently asked questions

About Guilford High School
What is the total enrollment at Guilford High School?
Guilford High School enrolls approximately 2,216 students in grades 09-12.
What grades does Guilford High School serve?
Guilford High School serves grades 09-12.
How many students per teacher at Guilford High School?
Approximately 19.5:1 students per teacher at Guilford High School.
How diverse is Guilford High School?
Guilford High School reports a student body of 35% White, 24% Hispanic, 29% Black, 3% Asian, 8% Two or more.
Who oversees Guilford High School?
Guilford High School is overseen by Rockford SD 205 in Winnebago County.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.
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