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If you had an hour of school board time for Harlem High School, what would you bring up?
Community prompt from u/allk12. Replies below.
Enrollment
1,884
High
DISTRICT 555 · STATE 834
SCHOOL COMMUNITY·HARLEM UD 122·NCES 171824002100
Harlem High School
9229 N Alpine Rd, Machesney Park, IL 61115 · (815) 654-4511 · Winnebago County
GRADES 09–12HIGH21-SUBURBTITLE IREGULAR SCHOOL1,884 STUDENTS
C+
allk12 Grade
Scored higher than 37% of Illinois public high schools
- C+Test scores Share of students meeting the state standard in reading, math, and other tested subjects, 2023-24 and 2024-25.
- C+Beats expectations How far test scores land above or below what the share of low-income students predicts for a school in this state.
- ·Three-year trend Not available for this school, so the grade uses the other parts.
Grades compare a school only with schools in the same state, because every state gives its own test. How grades work · Top-graded Illinois public high schools
Student : Teacher
14.1:1
133 FTE teachers
DISTRICT 13.5:1 · STATE 13.8:1
Free / Reduced Lunch
55%
1,030 students
DISTRICT 64% · 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
| Grade | Students | Share |
|---|---|---|
| Grade 9 | 479 | 25% |
| Grade 10 | 448 | 24% |
| Grade 11 | 483 | 26% |
| Grade 12 | 474 | 25% |
Student demographics
53%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 54% · STATE 69% · US 70%
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
School pathway
Feeds from
Based on grade levels within Harlem UD 122. Attendance zones can vary; confirm enrollment with the district.
BeatsExpectations
Demographically-adjusted score · methodologyTier
AS EXPECTED
Performing as predicted given the school's student profile
Actual proficiency
30.6%
composite math + reading, all grades
Predicted
40.0%
based on IL schools with similar FRL share
Beats by
-9.3pp
below demographic expectation
What this means: About 31% of students here test proficient in math and reading, compared with the roughly 40% 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 →
Schools most like Harlem High School
Harlem High School's state test result (30.6% proficient) is higher than 2 of the 5 schools below with a result.
| School | Students | Low-income | Proficient |
|---|---|---|---|
| Harlem High School this school | 1,884 | 54.7% | 30.6% |
| Bradley-Bourbonnais C High School Bradley | 1,914 | 49.8% | 37.9% |
| Quincy Sr High School Quincy | 1,847 | 55.1% | 38.6% |
| Mount Vernon High School Mount Vernon | 1,233 | 56.4% | 26.6% |
| Granite City High School Granite City | 1,755 | 62.8% | 23.5% |
| La Salle-Peru Twp High School La Salle | 1,167 | 47.3% | 37.7% |
Matched among Illinois high schools on enrollment, the share of students from low-income families (eligible for free or reduced-price lunch), and racial and ethnic makeup. Proficient is the average share of students meeting the state standard across all of the school's state tests in 2023-24 and 2024-25, the same combined score our test-score rankings use. Online schools and schools serving specialized populations are not matched.
Where Harlem High School ranks
Among high schools| Measure | This school | In Illinois | In Winnebago County |
|---|---|---|---|
| State test proficiency ranked highest first | 30.6% | #348 of 573 | #7 of 10 |
| Enrollment ranked largest first | 1,884 | #98 of 708 | #4 of 11 |
| Students per teacher ranked fewest first | 14.1:1 | #250 of 528 | #4 of 9 |
| Diversity index ranked most diverse first | 53.4% | #156 of 537 | #6 of 9 |
| Free and reduced lunch ranked highest share first | 54.7% | #243 of 578 | #6 of 10 |
| Enrollment change since 2017-18 ranked fastest growth first | +23.2% | #26 of 191 | #3 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. Arrows under a test-score rank show places moved since the prior test year, among schools tested both years.
4-year change
SY 2020-21 vs SY 2024-25Enrollment
1,884
-120 (-6%) vs 2020
+53% since 1990-91, when it was 1,230
Source: NCES Common Core of Data
Enrollment and staffing by year
| School year | Students | Teachers (FTE) | Students per teacher | Free and reduced lunch |
|---|---|---|---|---|
| 2024-25 | 1,884 | 133.2 | 14.1:1 | 55% (1,030) |
| 2023-24 | 1,947 | 137.9 | 14.1:1 | 56% (1,086) |
| 2022-23 | 1,875 | 137.8 | 13.6:1 | 53% (1,002) |
| 2020-21 | 2,004 | N/A | N/A | N/A |
| 2017-18 | 1,529 | 114 | 13.4:1 | 49% (752) |
| 2015-16 | 2,122 | 154 | 13.8:1 | 50% (1,067) |
| 2010-11 | 2,453 | 132 | 18.6:1 | 30% (747) |
| 2000-01 | 2,074 | 128 | 16.2:1 | N/A |
| 1990-91 | 1,230 | 76 | 16.2:1 | N/A |
Source: NCES Common Core of Data. Rows are the federal collections on file for Harlem High School.
Since 2017-18: students up 23% (1,529 to 1,884); teachers up 17% (114 to 133.2).
About Harlem High School
Harlem High School is a large high school in Illinois, located in Machesney Park. It offers grades 9 through 12 and has 1,884 students enrolled. High schools in Illinois have about 834 students on average; enrollment here is 126% higher.
Harlem UD 122 operates 11 schools. Combined enrollment is 6,108 students.
About 65% of the student body at Harlem High School is White. Smaller groups are 17% Hispanic, 9% multiracial, and 8% Black. Winnebago County residents are about 66% White, a similar share. A diversity index of 53% means there is a 53% chance two randomly chosen students at Harlem High School are from different groups.
There are about 14.1 students for every full-time-equivalent teacher at Harlem High School, which has 133.2. The 13.8:1 average for high schools in Illinois is close to this figure. Free or reduced-price lunch eligibility at Harlem High School is about 55%.
Among Illinois public high schools, Harlem High School outscored 37%, which works out to a C+ on the allk12 Grade.
In Illinois, Harlem High School is in the middle band of BeatsExpectations: 30.6% actual against a predicted 40.0%.
In Winnebago County, where the school is located, the median household earns about $65,837 a year, roughly 25% of adults have a four-year degree or more, and about 11% of residents live below the federal poverty line. Counting Harlem High School, Winnebago County has 94 public schools.
Measured in a straight line, Olson Park Elementary School is about 0.5 miles from Harlem High School. Around the school, at least 8 other public schools are within five miles. Its average proficiency rate of 30.6% is below the 34.2% average for nearby schools.
For locale, NCES codes Harlem High School as Suburb: Large.
In 2020-21, Harlem High School enrolled 2,004 students. By 2024-25, that number had fallen to 1,884.
On allk12, people connected to Harlem High School can post about special education services, counseling, and support programs. Members of the school community can share what they know.
Winnebago County at a glance
View full county profilePopulation
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
Related schools
Other schools in Harlem UD 122
- Harlem Middle SchoolMiddle · 1,330 students
- Donald C Parker Early Educ CenterElementary · 571 students
- Machesney Elementary SchoolElementary · 361 students
- Windsor Elementary SchoolElementary · 315 students
- Maple Elementary SchoolElementary · 313 students
- Olson Park Elementary SchoolElementary · 294 students
Other schools in Machesney Park
- Donald C Parker Early Educ CenterElementary · 571 students
- Machesney Elementary SchoolElementary · 361 students
- Olson Park Elementary SchoolElementary · 294 students
- Marquette Elementary SchoolElementary · 268 students
- Ralston Elementary SchoolElementary · 232 students
Other Harlem High schools
2 other US public schools in 3 states are named Harlem High. Harlem High School is the largest of the 3.
- Harlem High SchoolHarlem, GA · 1,318 students
- Harlem High SchoolHarlem, MT · 175 students
Nearby schools
- Olson Park Elementary School0.5 mi · 294
- Machesney Elementary School1.2 mi · 361
- Rock Cut Elementary School1.3 mi · 261
- Ralston Elementary School1.4 mi · 232
- Maple Elementary School1.5 mi · 313
- Donald C Parker Early Educ Center1.5 mi · 571
Frequently asked questions
About Harlem High SchoolHow many students attend Harlem High School?
Harlem High School enrolls approximately 1,884 students in grades 09-12.
What grades does Harlem High School serve?
Harlem High School serves grades 09-12.
How many teachers does Harlem High School have?
Harlem High School employs 133 FTE teachers, for a student-to-teacher ratio of 14.1:1.
How diverse is Harlem High School?
Harlem High School reports a student body of 65% White, 17% Hispanic, 8% Black, 1% Asian, 9% Two or more.
Is Harlem High School public or private?
Harlem High School is a public K-12 school, overseen by Harlem UD 122.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.