Enrollment
588
Illinois · 2024-25 NCES data
Elementary school (grades K-5) · Lemont, IL
River Valley School
Federal NCES profile for River Valley School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 48/100.
2024-25 NCES dataElementary school (grades K-5)NCES 170729005661
👥 S:T ratio 38
🌟 Gifted program 30
📋 Attendance 77
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
River Valley School earns 48/100 on the Resource Investment Index, with class sizes larger than 75% of Illinois schools.
- #1 of 5
- public schools in Lemont · Resource Index
- 48
- Resource Index · Typical
- 15.5:1
- large classes for Illinois
- 588
- students enrolled
River Valley School has class sizes larger than 75% of Illinois schools. Computed live against every Illinois school reporting to NCES.
By Resource Investment Index, River Valley School ranks #1 of 5 public schools in Lemont, IL.
School address
District: Lemont-Bromberek Csd 113a · Illinois
NCES ID 170729005661 Verify on NCES CCD record →
Teachers (FTE)
38.0
Federal CCD staff survey
Students per teacher
15.5:1
vs 14:1 Illinois avg
+11% vs state
Student-teacher ratio in context
How River Valley School compares with Illinois and U.S. medians
What stands out at River Valley School
River Valley School is a mid-sized elementary school in Lemont, Illinois, enrolling 588 students.
Class loads run somewhat heavier than typical: 15.5:1 puts it in the larger third of Illinois schools by student-teacher ratio.
Enrollment of 588 puts it in the larger third of Illinois schools by headcount.
Its Resource Investment Index lands in the upper third of 3,845 scored Illinois schools.
Its student body is predominantly White (82% of enrollment) (diversity index 32/100).
Attendance holds up well here: only 9.2% of students were chronically absent, below the typical post-pandemic national figure.
The surrounding Lemont-Bromberek Csd 113a spends $13,459 per pupil, 21% below the Illinois average, a leaner-resourced district than most.
Among Lemont's elementary schools, it stands alongside Central School (591 students): River Valley School is smaller than that campus by headcount and runs leaner classes (15.5:1 vs 16.9:1).
Lemont-Bromberek Csd 113a also operates Old Quarry Middle Sch (856 students) and Oakwood School (629 students) alongside River Valley 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 River Valley School compares
River Valley 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 | 15.5:1 | ▲ 11% | 14:1 | 15.7:1 |
| Enrollment | 588 | top 22% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
15.5:1
Leaner classes than 42% of US schools, a middle-of-the-pack class size.
588
Bigger than 72% of US schools by enrollment, mid-sized for the country.
Equity indicators (what these measure)
Staffing depth
15.5:1
students per teacher
- 11% above state mean
Top 75% in Illinois - lower ratio than 25% of state schools
Close to the 15:1 benchmark most often cited for individualized attention.
Engagement
9.2%
chronically absent (missed 10%+ of school days)
In the 5-10% range, close to the pre-pandemic national baseline.
Funding equity
$13,459
per pupil, district-wide
- below Illinois avg of $17,042
Somewhat below the U.S. average per-pupil spend; funding constraints may affect programs, facilities, and staffing.
Support staff
Counselors0.0 FTE
Student-support staffing from the Civil Rights Data Collection.
Discipline context
11
in-school suspensions + 3 out-of-school
Suspension rate: 1.9 per 100 students. Combined in-school and out-of-school rate: 2.4 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 81.5%
Hispanic or Latino 9.7%
Asian 4.9%
Two or More 2.9%
African American 0.9%
Native Hawaiian / Pacific Islander 0.2%
Largest group: White at 81.5% of enrollment.
Student-body diversity index 32.3/100
Simpson diversity index - at 32.3, River Valley School is less mixed than the Illinois school average of 38.9.
Programs
Funding & spending
District-wide per-pupil expenditure for Lemont-Bromberek Csd 113a, which includes River Valley School.
$13,459
Per student
-21%
vs Illinois
Avg $17,042
-19%
vs U.S.
Avg $16,593
Revenue mix
Local 68.6%
State 20.7%
Federal 10.7%
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 River Valley School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Old Quarry Middle Sch | Larger | No free-lunch data | Similar S:T ratio |
| Oakwood School | Similar size | No free-lunch data | Similar S:T ratio |
| Central School | Similar size | No free-lunch data | Similar S:T ratio |
Comparisons are relative to River Valley School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 856
- Students per teacher
- 15:1
- Resource Index
- 46/100
- Enrollment
- 629
- Students per teacher
- 15.3:1
- Resource Index
- 42/100
- Enrollment
- 591
- Students per teacher
- 16.9:1
- Resource Index
- 32/100
Similar elementary schools in Lemont
1 comparable elementary schools (grades K-5) serving the same city.
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 (~588 students)
Similar student-teacher ratio (~15.5:1)
Next steps
Verify locally before acting on River Valley School's federal record.
- Compare River Valley School against another school. Compare schools
- Lemont-Bromberek Csd 113a'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 River Valley School
How many students attend River Valley School?
River Valley School has 588 students enrolled. It is an elementary school in Lemont, IL.
What is the student-teacher ratio at River Valley School?
The student-teacher ratio at River Valley School is 15.5:1, which is 11% higher than the Illinois average of 14:1 and 1% lower than the national average of 15.7:1.
What is the racial and ethnic makeup of River Valley School?
The largest demographic group at River Valley School is White at 81.5% of enrollment, in Lemont, IL.
What is the Resource Investment Index for River Valley School?
River Valley School has a Resource Investment Index of 48/100 (typical 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 River Valley School rank among public schools in Lemont?
By Resource Investment Index, River Valley School ranks #1 of 5 public schools in Lemont, 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 Lemont on the city page.
Is River Valley School a good school?
River Valley School earns 48/100 on the Resource Investment Index, with class sizes larger than 75% of 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 Lemont-Bromberek Csd 113a?
Besides River Valley School, Lemont-Bromberek Csd 113a also operates Old Quarry Middle Sch (856 students), Oakwood School (629 students), and Central School (591 students). See the Lemont-Bromberek Csd 113a 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.