Enrollment
548
California · 2024-25 NCES data
Elementary school (grades K-5) · Bloomington, CA
Mary B. Lewis Elementary
Federal NCES profile for Mary B. Lewis Elementary, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 20/100.
2024-25 NCES dataElementary school (grades K-5)NCES 060939000952
👥 S:T ratio 9
🌟 Gifted program 70
🎓 Counselors 0
📋 Attendance 0
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Mary B. Lewis Elementary earns 20/100 on the Resource Investment Index, with class sizes near the California median.
- #2 of 5
- elementary schools in Bloomington · Resource Index
- 20
- Resource Index · Lower
- 22.8:1
- students per teacher
- 81.4%
- free-lunch eligible
Mary B. Lewis Elementary has class sizes near the California median. Computed live against every California school reporting to NCES.
By Resource Investment Index, Mary B. Lewis Elementary ranks #2 of 5 elementary schools in Bloomington, CA.
School address
District: Colton Joint Unified · California
NCES ID 060939000952 Verify on NCES CCD record →
Teachers (FTE)
24.0
Federal CCD staff survey
Students per teacher
22.8:1
vs 21.5:1 California avg
+6% vs state
Free-lunch eligible
81.4%
vs 55.5% California avg
+47% vs state
Student-teacher ratio in context
How Mary B. Lewis Elementary compares with California and U.S. medians
What stands out at Mary B. Lewis Elementary
Mary B. Lewis Elementary is a high-poverty, mid-sized elementary school in Bloomington, California, enrolling 548 students.
Class loads run somewhat heavier than typical: 22.8:1 puts it in the larger third of California schools by student-teacher ratio.
Economic need runs somewhat above the state's typical profile, with 81.4% of students eligible for free meals.
With 548 students, its enrollment sits close to the California median campus size.
Its Resource Investment Index lands in the lower third of 9,998 scored California schools.
Against 2,074 statewide peers matched on enrollment and economic need, it ranks mid-pack at #1,398.
Its student body is predominantly Hispanic or Latino (87% of enrollment) (diversity index 23/100).
Counselor access is stretched at roughly 548 students per counselor, well above the ASCA-recommended 250:1 ceiling.
Chronic absenteeism is elevated: 58.4% of students missed 10% or more of school days (2021-22 Civil Rights Data Collection).
Among Bloomington's elementary schools, it stands alongside Ruth Grimes Elementary (606 students): Mary B. Lewis Elementary is smaller than that campus by headcount and runs heavier classes (22.8:1 vs 20.9:1).
Colton Joint Unified also operates Bloomington High (1,794 students) and Colton High (1,729 students) alongside Mary B. Lewis Elementary.
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 Mary B. Lewis Elementary compares
Mary B. Lewis Elementary on the metrics families compare, against California and U.S. means.
| Metric | This school | vs California | California avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 22.8:1 | ▲ 6% | 21.5:1 | 15.7:1 |
| Free-lunch eligible | 81.4% | ▲ 47% | 55.5% | 51.7% |
| Enrollment | 548 | top 39% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
22.8:1
Leaner classes than 9% of US schools, heavier class loads than most.
548
Bigger than 67% of US schools by enrollment, mid-sized for the country.
Equity indicators (what these measure)
Economic need
81.4%
free-lunch eligible
- 47% 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
22.8:1
students per teacher
- 6% above state mean
Top 61% in California - lower ratio than 39% of state schools
Above 20:1, running heavier than the typical U.S. public school; staffing is comparatively stretched.
Engagement
58.4%
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
$16,590
per pupil, district-wide
- above California avg of $16,509
Close to the U.S. public-school average per-pupil spend.
Support staff
Counselors1.0 FTE
Per 548 students, the combined health-and-guidance staffing load for this school.
Discipline context
6
in-school suspensions + 3 out-of-school
Suspension rate: 1.1 per 100 students. Combined in-school and out-of-school rate: 1.6 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
Hispanic or Latino 87.2%
African American 7.1%
White 4.2%
Two or More 0.7%
Asian 0.4%
American Indian / Alaska Native 0.2%
Native Hawaiian / Pacific Islander 0.2%
Largest group: Hispanic or Latino at 87.2% of enrollment.
Student-body diversity index 23.3/100
Simpson diversity index - at 23.3, Mary B. Lewis Elementary is less mixed than the California school average of 46.0.
Programs
Gifted & talented Yes
Funding & spending
District-wide per-pupil expenditure for Colton Joint Unified, which includes Mary B. Lewis Elementary.
$16,590
Per student
+0%
vs California
Avg $16,509
0%
vs U.S.
Avg $16,593
Revenue mix
Local 20.0%
State 68.2%
Federal 11.8%
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 Mary B. Lewis Elementary Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Bloomington High | Larger | Lower economic need | Lower S:T ratio |
| Colton High | Larger | Similar economic need | Lower S:T ratio |
| Grand Terrace High Sch at the Ray Abril Jr. Edal Complex | Larger | Lower economic need | Lower S:T ratio |
| Colton Middle | Larger | Similar economic need | Similar S:T ratio |
| Terrace Hills Middle | Larger | Lower economic need | Lower S:T ratio |
Comparisons are relative to Mary B. Lewis Elementary's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 1,794
- Students per teacher
- 16.9:1
- Resource Index
- 37/100
- Enrollment
- 1,729
- Students per teacher
- 18.6:1
- Resource Index
- 34/100
- Enrollment
- 1,647
- Students per teacher
- 19.2:1
- Resource Index
- 35/100
- Enrollment
- 870
- Students per teacher
- 22.9:1
- Resource Index
- 35/100
- Enrollment
- 852
- Students per teacher
- 20.8:1
- Resource Index
- 33/100
Similar elementary schools in Bloomington
4 comparable elementary schools (grades K-5) serving the same city.
Ruth Grimes Elementary
Standard public school
606 students 20.9:1 students per teacher
Crestmore Elementary
Standard public school
586 students 22.5:1 students per teacher
Gerald a. Smith Elementary
Standard public school
565 students 22.6:1 students per teacher
Walter Zimmerman Elementary
Standard public school
512 students 22.3:1 students per teacher
Similar elementary 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 (~548 students)
Next steps
Verify locally before acting on Mary B. Lewis Elementary's federal record.
- Compare Mary B. Lewis Elementary against another school. Compare schools
- Colton Joint 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 Mary B. Lewis Elementary
How many students attend Mary B. Lewis Elementary?
Mary B. Lewis Elementary has 548 students enrolled. It is an elementary school in Bloomington, CA.
What is the student-teacher ratio at Mary B. Lewis Elementary?
The student-teacher ratio at Mary B. Lewis Elementary is 22.8:1, which is 6% higher than the California average of 21.5:1 and 45% higher than the national average of 15.7:1.
What percentage of students receive free lunch at Mary B. Lewis Elementary?
81.4% of students at Mary B. Lewis Elementary are eligible for free lunch, compared to the California average of 55.5%.
What is the racial and ethnic makeup of Mary B. Lewis Elementary?
The largest demographic group at Mary B. Lewis Elementary is Hispanic or Latino at 87.2% of enrollment, in Bloomington, CA.
What is the Resource Investment Index for Mary B. Lewis Elementary?
Mary B. Lewis Elementary has a Resource Investment Index of 20/100 (lower 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 Mary B. Lewis Elementary rank among elementary schools in Bloomington?
By Resource Investment Index, Mary B. Lewis Elementary ranks #2 of 5 elementary schools in Bloomington, CA. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all elementary schools in Bloomington on the city page.
Is Mary B. Lewis Elementary a good school?
Mary B. Lewis Elementary earns 20/100 on the Resource Investment Index, with class sizes near the California median. 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 Colton Joint Unified?
Besides Mary B. Lewis Elementary, Colton Joint Unified also operates Bloomington High (1,794 students), Colton High (1,729 students), and Grand Terrace High Sch at the Ray Abril Jr. Edal Complex (1,647 students). See the Colton Joint 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.