Enrollment
1,884
Illinois · 2024-25 NCES data
High school (grades 9-12) · Machesney Park, IL
Harlem High School
Federal NCES profile for Harlem High School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 57/100.
2024-25 NCES dataHigh school (grades 9-12)NCES 171824002100
👥 S:T ratio 45
📚 AP courses 100
🌟 Gifted program 30
🎓 Counselors 53
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Harlem High School earns 57/100 on the Resource Investment Index, with class sizes near the Illinois median. It is also one of the largest schools in Illinois.
- #2 of 6
- public schools in Machesney Park · Resource Index
- 57
- Resource Index · Higher
- 13.7:1
- students per teacher
- 1,884
- students enrolled
Harlem High School has class sizes near the Illinois median. Computed live against every Illinois school reporting to NCES.
By Resource Investment Index, Harlem High School ranks #2 of 6 public schools in Machesney Park, IL.
School address
District: Harlem Ud 122 · Illinois
NCES ID 171824002100 Verify on NCES CCD record →
Teachers (FTE)
137.0
Federal CCD staff survey
Students per teacher
13.7:1
vs 14:1 Illinois avg
-2% vs state
Student-teacher ratio in context
How Harlem High School compares with Illinois and U.S. medians
What stands out at Harlem High School
Harlem High School is a large high school in Machesney Park, Illinois, enrolling 1,884 students.
At 13.7:1, its student-teacher ratio sits close to the Illinois median, within a few percentage points of the 14:1 state norm, neither notably crowded nor notably small.
By headcount it is one of the larger campuses in Illinois, bigger than 97% of state schools at 1,884 students.
Its Resource Investment Index sits near the middle of the pack among 3,845 scored Illinois schools.
Its student body is led by White (65%) and Hispanic or Latino (17%) (diversity index 53/100).
On the academic-pipeline side it reports 29 Advanced Placement courses.
Counselor coverage is strong, about 236 students per counselor, inside the American School Counselor Association's recommended 250:1.
Discipline events run high: 506 in- and out-of-school suspensions were reported for 1,884 students in the 2021-22 Civil Rights Data Collection.
Harlem Ud 122 also operates Harlem Middle School (1,330 students) and Donald C Parker Early Educ Center (571 students) alongside Harlem 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 Harlem High School compares
Harlem 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 | 13.7:1 | ▼ 2% | 14:1 | 15.7:1 |
| Enrollment | 1,884 | top 3% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
13.7:1
Leaner classes than 62% of US schools, a middle-of-the-pack class size.
1,884
Bigger than 98% of US schools by enrollment, a large campus nationally.
Equity indicators (what these measure)
Staffing depth
13.7:1
students per teacher
- 2% below state mean
Top 51% in Illinois - lower ratio than 49% of state schools
Close to the 15:1 benchmark most often cited for individualized attention.
Funding equity
$18,860
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
Counselors8.0 FTE
Per 236 students, the combined health-and-guidance staffing load for this school.
Discipline context
308
in-school suspensions + 198 out-of-school
Suspension rate: 16.3 per 100 students. Combined in-school and out-of-school rate: 26.9 per 100 students. Reported via the Civil Rights Data Collection.
Overview
Enrollment 1,884 Top 3% in Illinois - larger than 97% of 3,845 state schools
Teachers (FTE) 137.0
Students per teacher 13.7:1 -2% vs state
Free-lunch eligible -
NCES ID 171824002100
Student demographics
White 65.2%
Hispanic or Latino 16.7%
Two or More 8.6%
African American 7.9%
Asian 1.4%
American Indian / Alaska Native 0.3%
Largest group: White at 65.2% of enrollment.
Student-body diversity index 53.3/100
Simpson diversity index - at 53.3, Harlem High School is more mixed than the Illinois school average of 38.9.
Programs & staff
AP courses offered 29
Counselors (FTE) 8.0
Students per counselor 236:1
Discipline & special education
In-school suspensions 308
Out-of-school suspensions 198
Funding & spending
District-wide per-pupil expenditure for Harlem Ud 122, which includes Harlem High School.
$18,860
Per student
+11%
vs Illinois
Avg $17,042
+14%
vs U.S.
Avg $16,593
Revenue mix
Local 41.1%
State 46.8%
Federal 12.1%
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 Harlem High School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Harlem Middle School | Smaller | No free-lunch data | Lower S:T ratio |
| Donald C Parker Early Educ Center | Smaller | No free-lunch data | Higher S:T ratio |
| Machesney Elem School | Smaller | No free-lunch data | Similar S:T ratio |
| Windsor Elem School | Smaller | No free-lunch data | Similar S:T ratio |
| Maple Elem School | Smaller | No free-lunch data | Higher S:T ratio |
Comparisons are relative to Harlem High School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 1,330
- Students per teacher
- 12.1:1
- Resource Index
- 37/100
- Enrollment
- 571
- Students per teacher
- 16.3:1
- Resource Index
- 24/100
- Enrollment
- 361
- Students per teacher
- 13.2:1
- Resource Index
- 37/100
- Enrollment
- 315
- Students per teacher
- 13.5:1
- Resource Index
- 26/100
- Enrollment
- 313
- Students per teacher
- 19.5:1
- Resource Index
- 50/100
Next steps
Verify locally before acting on Harlem High School's federal record.
- Compare Harlem High School against another school. Compare schools
- Harlem Ud 122'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 Harlem High School
How many students attend Harlem High School?
Harlem High School has 1,884 students enrolled. It is a high school in Machesney Park, IL.
What is the student-teacher ratio at Harlem High School?
The student-teacher ratio at Harlem High School is 13.7:1, which is 2% lower than the Illinois average of 14:1 and 13% lower than the national average of 15.7:1. Lower ratios generally mean more individual attention per student.
What is the racial and ethnic makeup of Harlem High School?
The largest demographic group at Harlem High School is White at 65.2% of enrollment, in Machesney Park, IL. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 53.3/100.
What is the Resource Investment Index for Harlem High School?
Harlem High School has a Resource Investment Index of 57/100 (higher 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 Harlem High School rank among public schools in Machesney Park?
By Resource Investment Index, Harlem High School ranks #2 of 6 public schools in Machesney Park, IL. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all public schools in Machesney Park on the city page.
Is Harlem High School a good school?
Harlem High School earns 57/100 on the Resource Investment Index, with class sizes near the Illinois median. 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 Harlem Ud 122?
Besides Harlem High School, Harlem Ud 122 also operates Harlem Middle School (1,330 students), Donald C Parker Early Educ Center (571 students), and Machesney Elem School (361 students). See the Harlem Ud 122 district page for the complete list.