Enrollment
249
Illinois · 2024-25 NCES data
Elementary school (grades K-5) · Oak Forest, IL
Scarlet Oak Elementary School
Federal NCES profile for Scarlet Oak Elementary School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 57/100.
2024-25 NCES dataElementary school (grades K-5)NCES 170393000081
👥 S:T ratio 45
🌟 Gifted program 70
📋 Attendance 55
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Scarlet Oak Elementary School earns 57/100 on the Resource Investment Index, with class sizes near the Illinois median. It is also more racially and ethnically mixed than most Illinois schools.
- #1 of 5
- elementary schools in Oak Forest · Resource Index
- 57
- Resource Index · Higher
- 13.8:1
- students per teacher
- 249
- students enrolled
Scarlet Oak Elementary School has class sizes near the Illinois median. Computed live against every Illinois school reporting to NCES.
By Resource Investment Index, Scarlet Oak Elementary School ranks #1 of 5 elementary schools in Oak Forest, IL.
School address
District: Arbor Park Sd 145 · Illinois
NCES ID 170393000081 Verify on NCES CCD record →
Teachers (FTE)
18.0
Federal CCD staff survey
Students per teacher
13.8:1
vs 14:1 Illinois avg
-1% vs state
Student-teacher ratio in context
How Scarlet Oak Elementary School compares with Illinois and U.S. medians
What stands out at Scarlet Oak Elementary School
Scarlet Oak Elementary School is a mid-sized elementary school in Oak Forest, Illinois, enrolling 249 students.
At 13.8:1, 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.
Enrollment of 249 puts it in the smaller third of Illinois schools by headcount.
Its Resource Investment Index outscores 91% of the 3,845 Illinois schools with a score on record, a top-tier result on this measure.
Its student body is led by White (39%) and Hispanic or Latino (29%), more mixed than most schools in the state (diversity index 71/100).
Attendance runs somewhat below the norm, with 18.1% of students chronically absent per the 2021-22 civil-rights collection.
Among Oak Forest's elementary schools, it stands alongside Arbor Park Middle School (520 students): Scarlet Oak Elementary School is smaller than that campus by headcount and runs heavier classes (13.8:1 vs 13:1).
Arbor Park Sd 145 also operates Arbor Park Middle School (520 students) and Arbor Elementary School (232 students) alongside Scarlet Oak Elementary 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 Scarlet Oak Elementary School compares
Scarlet Oak Elementary 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 | 13.8:1 | ▼ 1% | 14:1 | 15.7:1 |
| Enrollment | 249 | top 73% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
13.8:1
Leaner classes than 59% of US schools, a middle-of-the-pack class size.
249
Bigger than 25% of US schools by enrollment, mid-sized for the country.
Equity indicators (what these measure)
Staffing depth
13.8:1
students per teacher
- 1% below state mean
Top 53% in Illinois - lower ratio than 47% of state schools
Close to the 15:1 benchmark most often cited for individualized attention.
Engagement
18.1%
chronically absent (missed 10%+ of school days)
In the 15-20% range, nearing the "high" absenteeism threshold.
Funding equity
$18,367
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
Counselors0.0 FTE
Student-support staffing from the Civil Rights Data Collection.
Discipline context
0
in-school suspensions + 0 out-of-school
Suspension rate: 0.0 per 100 students. Combined in-school and out-of-school rate: 0.0 per 100 students. Reported via the Civil Rights Data Collection.
Overview
- Common Core of Data (June 2026): enrollment, staffing, and the student-teacher ratio above.
- Civil Rights Data Collection: discipline counts and program access (AP, gifted, special education).
- F-33 School District Finance Survey: the district-wide per-pupil spending figures below.
Three separate federal collections, each on its own reporting cadence - which is why this school's numbers line up on a consistent basis against every other school and state on this site, rather than mixing figures pulled from different survey years.
Student demographics
White 39.4%
Hispanic or Latino 29.3%
Asian 17.3%
African American 12.0%
Two or More 1.6%
American Indian / Alaska Native 0.4%
Largest group: White at 39.4% of enrollment.
Student-body diversity index 71.4/100
Simpson diversity index - at 71.4, Scarlet Oak Elementary School is more mixed than the Illinois school average of 38.9.
Programs
Gifted & talented Yes
Funding & spending
District-wide per-pupil expenditure for Arbor Park Sd 145, which includes Scarlet Oak Elementary School.
$18,367
Per student
+8%
vs Illinois
Avg $17,042
+11%
vs U.S.
Avg $16,593
Revenue mix
Local 47.1%
State 44.3%
Federal 8.6%
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 Scarlet Oak Elementary School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Arbor Park Middle School | Larger | No free-lunch data | Similar S:T ratio |
| Arbor Elementary School | Similar size | No free-lunch data | Similar S:T ratio |
| Kimberly Heights Elem School | Smaller | No free-lunch data | Higher S:T ratio |
Comparisons are relative to Scarlet Oak Elementary School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 520
- Students per teacher
- 13:1
- Resource Index
- 42/100
- Enrollment
- 232
- Students per teacher
- 12.9:1
- Resource Index
- 56/100
- Enrollment
- 181
- Students per teacher
- 16.5:1
- Resource Index
- 39/100
Similar elementary schools in Oak Forest
4 comparable elementary schools (grades K-5) serving the same city.
Arbor Park Middle School
Standard public school
520 students 13:1 students per teacher
Kerkstra Elem School
Standard public school
407 students 14:1 students per teacher
Lee R Foster Elem School
Standard public school
397 students 15.3:1 students per teacher
Arbor Elementary School
Standard public school
232 students 12.9:1 students per teacher
Similar elementary schools statewide
Matched by enrollment size and by staffing ratio across all of Illinois, not just this city - a different peer set than the local comparisons above.
Similar enrollment (~249 students)
Similar student-teacher ratio (~13.8:1)
Next steps
Verify locally before acting on Scarlet Oak Elementary School's federal record.
- Compare Scarlet Oak Elementary School against another school. Compare schools
- Arbor Park Sd 145'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 Scarlet Oak Elementary School
How many students attend Scarlet Oak Elementary School?
Scarlet Oak Elementary School has 249 students enrolled. It is an elementary school in Oak Forest, IL.
What is the student-teacher ratio at Scarlet Oak Elementary School?
The student-teacher ratio at Scarlet Oak Elementary School is 13.8:1, which is 1% lower than the Illinois average of 14:1 and 12% 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 Scarlet Oak Elementary School?
The largest demographic group at Scarlet Oak Elementary School is White at 39.4% of enrollment, in Oak Forest, IL. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 71.4/100.
What is the Resource Investment Index for Scarlet Oak Elementary School?
Scarlet Oak Elementary School has a Resource Investment Index of 57/100 (higher reported resources relative to schools nationally) based on 3 factors: student-teacher ratio, attendance rates. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Scarlet Oak Elementary School rank among elementary schools in Oak Forest?
By Resource Investment Index, Scarlet Oak Elementary School ranks #1 of 5 elementary schools in Oak Forest, IL. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all elementary schools in Oak Forest on the city page.
Is Scarlet Oak Elementary School a good school?
Scarlet Oak Elementary School earns 57/100 on the Resource Investment Index, with class sizes near the Illinois median. It is also more racially and ethnically mixed than most Illinois schools. 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 Arbor Park Sd 145?
Besides Scarlet Oak Elementary School, Arbor Park Sd 145 also operates Arbor Park Middle School (520 students), Arbor Elementary School (232 students), and Kimberly Heights Elem School (181 students). See the Arbor Park Sd 145 district page for the complete list.
Related tools
Every figure on PlainSchools is rendered directly from the source NCES, CRDC and F-33 federal records, no number is typed in by an editor. Each school's figures reflect its most recent NCES/CRDC submission on file. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of June 2026.