Enrollment
302
Oregon · 2024-25 NCES data
Elementary school (grades K-5) · Ontario, OR
May Roberts Elementary School
Federal NCES profile for May Roberts Elementary School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 46/100.
2024-25 NCES dataElementary school (grades K-5)NCES 410927000743
👥 S:T ratio 52
🌟 Gifted program 70
🎓 Counselors 40
📋 Attendance 23
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
May Roberts Elementary School earns 46/100 on the Resource Investment Index, with class sizes smaller than 90% of Oregon schools.
- #1 of 6
- elementary schools in Ontario · Resource Index
- 46
- Resource Index · Typical
- 12.1:1
- small classes for Oregon
- 302
- students enrolled
May Roberts Elementary School has class sizes smaller than 90% of Oregon schools. Computed live against every Oregon school reporting to NCES.
By Resource Investment Index, May Roberts Elementary School ranks #1 of 6 elementary schools in Ontario, OR.
School address
Teachers (FTE)
25.0
Federal CCD staff survey
Students per teacher
12.1:1
vs 17.6:1 Oregon avg
-31% vs state
Student-teacher ratio in context
How May Roberts Elementary School compares with Oregon and U.S. medians
What stands out at May Roberts Elementary School
May Roberts Elementary School is a mid-sized elementary school in Ontario, Oregon, enrolling 302 students.
Classes run notably small here: at 12.1:1, May Roberts Elementary School is leaner than roughly 90% of Oregon schools and 31% under the state's 17.6:1 norm, more adult attention per pupil than most peers.
With 302 students, its enrollment sits close to the Oregon median campus size.
Its Resource Investment Index lands in the upper third of 1,273 scored Oregon schools.
Its student body is led by Hispanic or Latino (64%) and White (33%) (diversity index 48/100).
Counselor coverage runs a bit thin, about 302 students per counselor, somewhat past the ASCA-recommended 250:1 benchmark.
Chronic absenteeism is elevated: 30.8% of students missed 10% or more of school days (2021-22 Civil Rights Data Collection).
The surrounding Ontario Sd 8c spends $14,496 per pupil, 20% below the Oregon average, a leaner-resourced district than most.
Its district draws 15.6% of revenue from federal sources, an above-typical federal share that tends to track a higher-need student population.
Among Ontario's elementary schools, it stands alongside Alameda Elementary School (355 students): May Roberts Elementary School is smaller than that campus by headcount and runs leaner classes (12.1:1 vs 17.8:1).
Ontario Sd 8c also operates Ontario High School (709 students) and Ontario Middle School (471 students) alongside May Roberts 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 May Roberts Elementary School compares
May Roberts Elementary School on the metrics families compare, against Oregon and U.S. means.
| Metric | This school | vs Oregon | Oregon avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 12.1:1 | ▼ 31% | 17.6:1 | 15.7:1 |
| Enrollment | 302 | top 58% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
12.1:1
Leaner classes than 75% of US schools, among the more generously staffed nationally.
302
Bigger than 33% of US schools by enrollment, mid-sized for the country.
Equity indicators (what these measure)
Staffing depth
12.1:1
students per teacher
- 31% below state mean
Top 10% in Oregon - lower ratio than 90% of state schools
Well under the widely cited 15:1 individualized-attention benchmark, among the leaner class loads nationally.
Engagement
30.8%
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
$14,496
per pupil, district-wide
- below Oregon avg of $18,086
Somewhat below the U.S. average per-pupil spend; funding constraints may affect programs, facilities, and staffing.
Support staff
Counselors1.0 FTE
Per 302 students, the combined health-and-guidance staffing load for this school.
Discipline context
1
in-school suspensions + 0 out-of-school
Suspension rate: 0.3 per 100 students. Combined in-school and out-of-school rate: 0.3 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 63.9%
White 33.4%
Two or More 2.6%
Largest group: Hispanic or Latino at 63.9% of enrollment.
Student-body diversity index 47.9/100
Simpson diversity index - at 47.9, May Roberts Elementary School is about as mixed as the Oregon school average of 47.1.
Programs
Gifted & talented Yes
Funding & spending
District-wide per-pupil expenditure for Ontario Sd 8c, which includes May Roberts Elementary School.
$14,496
Per student
-20%
vs Oregon
Avg $18,086
-13%
vs U.S.
Avg $16,593
Revenue mix
Local 16.6%
State 67.8%
Federal 15.6%
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 May Roberts Elementary School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Ontario High School | Larger | No free-lunch data | Higher S:T ratio |
| Ontario Middle School | Larger | No free-lunch data | Higher S:T ratio |
| Alameda Elementary School | Similar size | No free-lunch data | Higher S:T ratio |
| Aiken Elementary School | Similar size | No free-lunch data | Higher S:T ratio |
| Cairo Elementary School | Smaller | No free-lunch data | Higher S:T ratio |
Comparisons are relative to May Roberts Elementary School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 709
- Students per teacher
- 18.7:1
- Resource Index
- 31/100
- Enrollment
- 471
- Students per teacher
- 22.4:1
- Resource Index
- 38/100
- Enrollment
- 355
- Students per teacher
- 17.8:1
- Resource Index
- 41/100
- Enrollment
- 333
- Students per teacher
- 23.8:1
- Resource Index
- 39/100
- Enrollment
- 109
- Students per teacher
- 13.6:1
- Resource Index
- 33/100
Similar elementary schools in Ontario
5 comparable elementary schools (grades K-5) serving the same city.
Alameda Elementary School
Standard public school
355 students 17.8:1 students per teacher
Aiken Elementary School
Standard public school
333 students 23.8:1 students per teacher
Annex Charter School
Standard public school
131 students 14.6:1 students per teacher
Cairo Elementary School
Standard public school
109 students 13.6:1 students per teacher
Pioneer Elementary School
Standard public school
90 students 15:1 students per teacher
Similar elementary schools statewide
Matched by enrollment size and by staffing ratio across all of Oregon, not just this city - a different peer set than the local comparisons above.
Similar enrollment (~302 students)
Next steps
Verify locally before acting on May Roberts Elementary School's federal record.
- Compare May Roberts Elementary School against another school. Compare schools
- Ontario Sd 8c'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 May Roberts Elementary School
How many students attend May Roberts Elementary School?
May Roberts Elementary School has 302 students enrolled. It is an elementary school in Ontario, OR.
What is the student-teacher ratio at May Roberts Elementary School?
The student-teacher ratio at May Roberts Elementary School is 12.1:1, which is 31% lower than the Oregon average of 17.6:1 and 23% 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 May Roberts Elementary School?
The largest demographic group at May Roberts Elementary School is Hispanic or Latino at 63.9% of enrollment, in Ontario, OR.
What is the Resource Investment Index for May Roberts Elementary School?
May Roberts Elementary School has a Resource Investment Index of 46/100 (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 May Roberts Elementary School rank among elementary schools in Ontario?
By Resource Investment Index, May Roberts Elementary School ranks #1 of 6 elementary schools in Ontario, OR. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all elementary schools in Ontario on the city page.
Is May Roberts Elementary School a good school?
May Roberts Elementary School earns 46/100 on the Resource Investment Index, with class sizes smaller than 90% of Oregon 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 Ontario Sd 8c?
Besides May Roberts Elementary School, Ontario Sd 8c also operates Ontario High School (709 students), Ontario Middle School (471 students), and Alameda Elementary School (355 students). See the Ontario Sd 8c 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.