Enrollment
917
California · 2024-25 NCES data
Middle school (grades 6-8) · Rialto, CA
Ben F. Kolb Middle
Federal NCES profile for Ben F. Kolb Middle, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 35/100.
2024-25 NCES dataMiddle school (grades 6-8)NCES 063237004994
👥 S:T ratio 0
🌟 Gifted program 70
🎓 Counselors 39
📋 Attendance 31
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Ben F. Kolb Middle earns 35/100 on the Resource Investment Index, with class sizes larger than 82% of California schools.
- #2 of 4
- middle schools in Rialto · Resource Index
- 35
- Resource Index · Typical
- 25.5:1
- large classes for California
- 68.0%
- free-lunch eligible
Ben F. Kolb Middle has class sizes larger than 82% of California schools. Computed live against every California school reporting to NCES.
By Resource Investment Index, Ben F. Kolb Middle ranks #2 of 4 middle schools in Rialto, CA.
School address
District: Rialto Unified · California
NCES ID 063237004994 Verify on NCES CCD record →
Teachers (FTE)
36.0
Federal CCD staff survey
Students per teacher
25.5:1
vs 21.5:1 California avg
+19% vs state
Free-lunch eligible
68.0%
vs 55.5% California avg
+23% vs state
Student-teacher ratio in context
How Ben F. Kolb Middle compares with California and U.S. medians
What stands out at Ben F. Kolb Middle
Ben F. Kolb Middle is a higher-need, large middle school in Rialto, California, enrolling 917 students.
Class loads run somewhat heavier than typical: 25.5:1 puts it in the larger third of California schools by student-teacher ratio.
Economic need runs somewhat above the state's typical profile, with 68.0% of students eligible for free meals.
Enrollment of 917 puts it in the larger third of California schools by headcount.
Its Resource Investment Index sits near the middle of the pack among 9,998 scored California schools.
Against 1,221 statewide peers matched on enrollment and economic need, it ranks in the upper tier at #167.
Its student body is predominantly Hispanic or Latino (81% of enrollment) (diversity index 33/100).
Counselor coverage runs a bit thin, about 306 students per counselor, somewhat past the ASCA-recommended 250:1 benchmark.
Chronic absenteeism is elevated: 27.7% of students missed 10% or more of school days (2021-22 Civil Rights Data Collection).
The federal civil-rights collection also records 2 expulsions at this campus for 2021-22.
Among Rialto's middle schools, it stands alongside Rialto Middle (1,017 students): Ben F. Kolb Middle is smaller than that campus by headcount and runs heavier classes (25.5:1 vs 23.1:1).
Rialto Unified also operates Rialto High (2,623 students) and Eisenhower High (2,075 students) alongside Ben F. Kolb Middle.
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 Ben F. Kolb Middle compares
Ben F. Kolb Middle on the metrics families compare, against California and U.S. means.
| Metric | This school | vs California | California avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 25.5:1 | ▲ 19% | 21.5:1 | 15.7:1 |
| Free-lunch eligible | 68.0% | ▲ 23% | 55.5% | 51.7% |
| Enrollment | 917 | top 13% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
25.5:1
Leaner classes than 4% of US schools, heavier class loads than most.
917
Bigger than 89% of US schools by enrollment, a large campus nationally.
Equity indicators (what these measure)
Economic need
68.0%
free-lunch eligible
- 23% above the California average of 55.5%
Above the 40% Title I schoolwide threshold; federal funds support the whole school, not individual students.
Staffing depth
25.5:1
students per teacher
- 19% above state mean
Top 82% in California - lower ratio than 18% of state schools
Well above 20:1, one of the more stretched staffing loads nationally relative to enrollment.
Engagement
27.7%
chronically absent (missed 10%+ of school days)
At or above 20%, the commonly used threshold for "high" chronic absenteeism, signaling significant barriers to regular attendance.
Funding equity
$15,995
per pupil, district-wide
- below California avg of $16,509
Close to the U.S. public-school average per-pupil spend.
Support staff
Counselors3.0 FTE
Per 306 students, the combined health-and-guidance staffing load for this school.
Discipline context
14
in-school suspensions + 106 out-of-school
Suspension rate: 1.5 per 100 students. Combined in-school and out-of-school rate: 13.1 per 100 students. Reported via the Civil Rights Data Collection. Includes 2 expulsions.
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
Hispanic or Latino 81.1%
African American 11.6%
White 2.9%
Two or More 2.6%
Asian 0.9%
Native Hawaiian / Pacific Islander 0.7%
American Indian / Alaska Native 0.2%
Largest group: Hispanic or Latino at 81.1% of enrollment.
Student-body diversity index 32.7/100
Simpson diversity index - at 32.7, Ben F. Kolb Middle is less mixed than the California school average of 46.0.
Programs
Gifted & talented Yes
Funding & spending
District-wide per-pupil expenditure for Rialto Unified, which includes Ben F. Kolb Middle.
$15,995
Per student
-3%
vs California
Avg $16,509
-4%
vs U.S.
Avg $16,593
Revenue mix
Local 16.4%
State 72.8%
Federal 10.9%
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 Ben F. Kolb Middle Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Rialto High | Larger | Similar economic need | Lower S:T ratio |
| Eisenhower High | Larger | Similar economic need | Lower S:T ratio |
| Wilmer Amina Carter High | Larger | Similar economic need | Lower S:T ratio |
| William G. Jehue Middle | Larger | Similar economic need | Similar S:T ratio |
| Rialto Middle | Similar size | Similar economic need | Lower S:T ratio |
Comparisons are relative to Ben F. Kolb Middle's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 2,623
- Students per teacher
- 22.2:1
- Resource Index
- 39/100
- Enrollment
- 2,075
- Students per teacher
- 20.8:1
- Resource Index
- 32/100
- Enrollment
- 1,951
- Students per teacher
- 21:1
- Resource Index
- 33/100
- Enrollment
- 1,444
- Students per teacher
- 25.8:1
- Resource Index
- 23/100
- Enrollment
- 1,017
- Students per teacher
- 23.1:1
- Resource Index
- 27/100
Similar middle schools in Rialto
3 comparable middle schools (grades 6-8) serving the same city.
Similar middle schools statewide
Matched by enrollment size and by staffing ratio across all of California, not just this city - a different peer set than the local comparisons above.
Similar enrollment (~917 students)
Similar student-teacher ratio (~25.5:1)
Next steps
Verify locally before acting on Ben F. Kolb Middle's federal record.
- Compare Ben F. Kolb Middle against another school. Compare schools
- Rialto Unified'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 Ben F. Kolb Middle
How many students attend Ben F. Kolb Middle?
Ben F. Kolb Middle has 917 students enrolled. It is a middle school in Rialto, CA.
What is the student-teacher ratio at Ben F. Kolb Middle?
The student-teacher ratio at Ben F. Kolb Middle is 25.5:1, which is 19% higher than the California average of 21.5:1 and 62% higher than the national average of 15.7:1.
What percentage of students receive free lunch at Ben F. Kolb Middle?
68.0% of students at Ben F. Kolb Middle are eligible for free lunch, compared to the California average of 55.5%.
What is the racial and ethnic makeup of Ben F. Kolb Middle?
The largest demographic group at Ben F. Kolb Middle is Hispanic or Latino at 81.1% of enrollment, in Rialto, CA.
What is the Resource Investment Index for Ben F. Kolb Middle?
Ben F. Kolb Middle has a Resource Investment Index of 35/100 (typical reported resources relative to schools nationally) based on 4 factors: student-teacher ratio, counselor availability, attendance rates. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Ben F. Kolb Middle rank among middle schools in Rialto?
By Resource Investment Index, Ben F. Kolb Middle ranks #2 of 4 middle schools in Rialto, CA. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all middle schools in Rialto on the city page.
Is Ben F. Kolb Middle a good school?
Ben F. Kolb Middle earns 35/100 on the Resource Investment Index, with class sizes larger than 82% of California 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 Rialto Unified?
Besides Ben F. Kolb Middle, Rialto Unified also operates Rialto High (2,623 students), Eisenhower High (2,075 students), and Wilmer Amina Carter High (1,951 students). See the Rialto Unified 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.