Enrollment
1,634
California · 2024-25 NCES data
High school (grades 9-12) · Loomis, CA
Del Oro High
Federal NCES profile for Del Oro High, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 23/100.
2024-25 NCES dataHigh school (grades 9-12)NCES 063075004782
👥 S:T ratio 5
📚 AP courses 5
🌟 Gifted program 30
🎓 Counselors 18
📋 Attendance 55
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Del Oro High earns 23/100 on the Resource Investment Index, with class sizes near the California median. It is also one of the largest schools in California.
- #3 of 6
- public schools in Loomis · Resource Index
- 23
- Resource Index · Lower
- 23.7:1
- students per teacher
- 11.0%
- free-lunch eligible
Del Oro High has class sizes near the California median. Computed live against every California school reporting to NCES.
By Resource Investment Index, Del Oro High ranks #3 of 6 public schools in Loomis, CA.
School address
District: Placer Union High · California
NCES ID 063075004782 Verify on NCES CCD record →
Teachers (FTE)
69.0
Federal CCD staff survey
Students per teacher
23.7:1
vs 21.5:1 California avg
+10% vs state
Free-lunch eligible
11.0%
vs 55.5% California avg
-80% vs state
Student-teacher ratio in context
How Del Oro High compares with California and U.S. medians
What stands out at Del Oro High
Del Oro High is a lower-poverty, large high school in Loomis, California, enrolling 1,634 students.
Class loads run somewhat heavier than typical: 23.7:1 puts it in the larger third of California schools by student-teacher ratio.
Comparatively few students face economic hardship here, 11.0% free-meal eligibility runs 80% below the California average.
By headcount it is one of the larger campuses in California, bigger than 95% of state schools at 1,634 students.
Its Resource Investment Index sits near the middle of the pack among 9,998 scored California schools.
Among 210 similarly sized, similarly resourced-need California schools statewide, it ranks #180, in the lower tier once campus size and economic need are matched.
Its student body is led by White (74%) and Hispanic or Latino (13%) (diversity index 43/100).
On the academic-pipeline side it reports 1 Advanced Placement course.
Counselor access is stretched at roughly 409 students per counselor, well above the ASCA-recommended 250:1 ceiling.
Attendance runs somewhat below the norm, with 18.1% of students chronically absent per the 2021-22 civil-rights collection.
The federal civil-rights collection also records 8 expulsions at this campus for 2021-22.
Placer Union High also operates Placer High (1,265 students) and Colfax High (611 students) alongside Del Oro High.
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 Del Oro High compares
Del Oro High on the metrics families compare, against California and U.S. means.
| Metric | This school | vs California | California avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 23.7:1 | ▲ 10% | 21.5:1 | 15.7:1 |
| Free-lunch eligible | 11.0% | ▼ 80% | 55.5% | 51.7% |
| Enrollment | 1,634 | top 5% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
23.7:1
Leaner classes than 7% of US schools, heavier class loads than most.
1,634
Bigger than 97% of US schools by enrollment, a large campus nationally.
Equity indicators (what these measure)
Economic need
11.0%
free-lunch eligible
- 80% below the California average of 55.5%
Below the 40% Title I threshold, among the lower-need profiles in the state; federal aid targets individual qualifying students rather than schoolwide programs.
Staffing depth
23.7:1
students per teacher
- 10% above state mean
Top 69% in California - lower ratio than 31% of state schools
Above 20:1, running heavier than the typical U.S. public school; staffing is comparatively stretched.
Engagement
18.1%
chronically absent (missed 10%+ of school days)
In the 15-20% range, nearing the "high" absenteeism threshold.
Funding equity
$13,764
per pupil, district-wide
- below California avg of $16,509
Somewhat below the U.S. average per-pupil spend; funding constraints may affect programs, facilities, and staffing.
Support staff
Counselors4.0 FTE
Per 409 students, the combined health-and-guidance staffing load for this school.
Discipline context
27
in-school suspensions + 41 out-of-school
Suspension rate: 1.7 per 100 students. Combined in-school and out-of-school rate: 4.2 per 100 students. Reported via the Civil Rights Data Collection. Includes 8 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
White 73.7%
Hispanic or Latino 13.1%
Two or More 9.1%
Asian 2.8%
American Indian / Alaska Native 1.0%
African American 0.3%
Largest group: White at 73.7% of enrollment.
Student-body diversity index 43.0/100
Simpson diversity index - at 43.0, Del Oro High is less mixed than the California school average of 46.0.
Programs
AP courses offered 1
Funding & spending
District-wide per-pupil expenditure for Placer Union High, which includes Del Oro High.
$13,764
Per student
-17%
vs California
Avg $16,509
-17%
vs U.S.
Avg $16,593
Revenue mix
Local 66.4%
State 26.9%
Federal 6.7%
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 Del Oro High Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Placer High | Similar size | Higher economic need | Lower S:T ratio |
| Colfax High | Smaller | Higher economic need | Lower S:T ratio |
| Foresthill High | Smaller | Higher economic need | Lower S:T ratio |
| Maidu Virtual Charter Academy | Smaller | Higher economic need | Lower S:T ratio |
| Confluence Continuation High | Smaller | Higher economic need | Lower S:T ratio |
Comparisons are relative to Del Oro High's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 1,265
- Students per teacher
- 20.4:1
- Resource Index
- 21/100
- Enrollment
- 611
- Students per teacher
- 21.1:1
- Resource Index
- 35/100
- Enrollment
- 190
- Students per teacher
- 15.8:1
- Resource Index
- 54/100
- Enrollment
- 115
- Students per teacher
- 19.2:1
- Resource Index
- 43/100
- Enrollment
- 103
- Students per teacher
- 20.6:1
- Resource Index
- 24/100
Similar high 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 (~1,634 students)
Similar student-teacher ratio (~23.7:1)
Next steps
Verify locally before acting on Del Oro High's federal record.
- Compare Del Oro High against another school. Compare schools
- Placer Union High'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 Del Oro High
How many students attend Del Oro High?
Del Oro High has 1,634 students enrolled. It is a high school in Loomis, CA.
What is the student-teacher ratio at Del Oro High?
The student-teacher ratio at Del Oro High is 23.7:1, which is 10% higher than the California average of 21.5:1 and 51% higher than the national average of 15.7:1.
What percentage of students receive free lunch at Del Oro High?
11.0% of students at Del Oro High are eligible for free lunch, compared to the California average of 55.5%.
What is the racial and ethnic makeup of Del Oro High?
The largest demographic group at Del Oro High is White at 73.7% of enrollment, in Loomis, CA.
What is the Resource Investment Index for Del Oro High?
Del Oro High has a Resource Investment Index of 23/100 (lower reported resources relative to schools nationally) based on 5 factors: student-teacher ratio, AP course offerings, counselor availability, attendance rates. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Del Oro High rank among public schools in Loomis?
By Resource Investment Index, Del Oro High ranks #3 of 6 public schools in Loomis, CA. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all public schools in Loomis on the city page.
Is Del Oro High a good school?
Del Oro High earns 23/100 on the Resource Investment Index, with class sizes near the California median. It is also one of the largest schools in California. 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 Placer Union High?
Besides Del Oro High, Placer Union High also operates Placer High (1,265 students), Colfax High (611 students), and Foresthill High (190 students). See the Placer Union High 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.