Enrollment
196
California · 2024-25 NCES data
High school (grades 9-12) · Clarksburg, CA
Delta High
Federal NCES profile for Delta High, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 43/100.
2024-25 NCES dataHigh school (grades 9-12)NCES 063311005123
👥 S:T ratio 40
📚 AP courses 40
🌟 Gifted program 70
🎓 Counselors 51
📋 Attendance 13
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Delta High earns 43/100 on the Resource Investment Index, with class sizes smaller than 89% of California schools.
- #1 of 3
- public schools in Clarksburg · Resource Index
- 43
- Resource Index · Typical
- 15.1:1
- small classes for California
- 45.8%
- free-lunch eligible
Delta High has class sizes smaller than 89% of California schools. Computed live against every California school reporting to NCES.
By Resource Investment Index, Delta High ranks #1 of 3 public schools in Clarksburg, CA.
School address
District: River Delta Joint Unified · California
NCES ID 063311005123 Verify on NCES CCD record →
Teachers (FTE)
13.0
Federal CCD staff survey
Students per teacher
15.1:1
vs 21.5:1 California avg
-30% vs state
Free-lunch eligible
45.8%
vs 55.5% California avg
-17% vs state
Student-teacher ratio in context
How Delta High compares with California and U.S. medians
What stands out at Delta High
Delta High is a mid-sized high school in Clarksburg, California, enrolling 196 students.
Classes run notably small here: at 15.1:1, Delta High is leaner than roughly 89% of California schools and 30% under the state's 21.5:1 norm, more adult attention per pupil than most peers.
Economic need runs somewhat below the state's typical profile, with 45.8% of students eligible for free meals.
Enrollment of 196 puts it in the smaller third of California schools by headcount.
Its Resource Investment Index lands in the upper third of 9,998 scored California schools.
Against 430 statewide peers matched on enrollment and economic need, it ranks in the upper tier at #75.
Its student body is led by Hispanic or Latino (72%) and White (20%) (diversity index 43/100).
On the academic-pipeline side it reports 8 Advanced Placement courses.
Counselor coverage is strong, about 245 students per counselor, inside the American School Counselor Association's recommended 250:1.
Chronic absenteeism is elevated: 34.7% of students missed 10% or more of school days (2021-22 Civil Rights Data Collection).
River Delta Joint Unified also operates D. H. White Elementary (432 students) and Rio Vista High (317 students) alongside Delta 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 Delta High compares
Delta 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 | 15.1:1 | ▼ 30% | 21.5:1 | 15.7:1 |
| Free-lunch eligible | 45.8% | ▼ 17% | 55.5% | 51.7% |
| Enrollment | 196 | top 83% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
15.1:1
Leaner classes than 46% of US schools, a middle-of-the-pack class size.
196
Bigger than 19% of US schools by enrollment, a small campus.
Equity indicators (what these measure)
Economic need
45.8%
free-lunch eligible
- 17% below the California average of 55.5%
Above the 40% Title I schoolwide threshold; federal funds support the whole school, not individual students.
Staffing depth
15.1:1
students per teacher
- 30% below state mean
Top 11% in California - lower ratio than 89% of state schools
Close to the 15:1 benchmark most often cited for individualized attention.
Engagement
34.7%
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
$13,859
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
Counselors0.8 FTE
Student-support staffing from the Civil Rights Data Collection.
Discipline context
1
in-school suspensions + 19 out-of-school
Suspension rate: 0.5 per 100 students. Combined in-school and out-of-school rate: 10.2 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 72.4%
White 20.4%
Two or More 3.6%
African American 1.5%
Asian 1.0%
American Indian / Alaska Native 0.5%
Native Hawaiian / Pacific Islander 0.5%
Largest group: Hispanic or Latino at 72.4% of enrollment.
Student-body diversity index 43.3/100
Simpson diversity index - at 43.3, Delta High is less mixed than the California school average of 46.0.
Programs
AP courses offered 8
Gifted & talented Yes
Funding & spending
District-wide per-pupil expenditure for River Delta Joint Unified, which includes Delta High.
$13,859
Per student
-16%
vs California
Avg $16,509
-16%
vs U.S.
Avg $16,593
Revenue mix
Local 50.1%
State 41.9%
Federal 8.0%
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 Delta High Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| D. H. White Elementary | Larger | Similar economic need | Higher S:T ratio |
| Rio Vista High | Larger | Similar economic need | Similar S:T ratio |
| Isleton Elementary | Similar size | Similar economic need | Higher S:T ratio |
| Clarksburg Middle | Similar size | Similar economic need | Higher S:T ratio |
| Riverview Middle | Similar size | Similar economic need | Higher S:T ratio |
Comparisons are relative to Delta High's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 432
- Students per teacher
- 33.2:1
- Resource Index
- 7/100
- Enrollment
- 317
- Students per teacher
- 14.4:1
- Resource Index
- 37/100
- Enrollment
- 188
- Students per teacher
- 20.9:1
- Resource Index
- 24/100
- Enrollment
- 171
- Students per teacher
- 21.4:1
- Resource Index
- 15/100
- Enrollment
- 160
- Students per teacher
- 17.8:1
- Resource Index
- 33/100
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 (~196 students)
Similar student-teacher ratio (~15.1:1)
Next steps
Verify locally before acting on Delta High's federal record.
- Compare Delta High against another school. Compare schools
- River Delta 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 Delta High
How many students attend Delta High?
Delta High has 196 students enrolled. It is a high school in Clarksburg, CA.
What is the student-teacher ratio at Delta High?
The student-teacher ratio at Delta High is 15.1:1, which is 30% lower than the California average of 21.5:1 and 4% lower than the national average of 15.7:1. Lower ratios generally mean more individual attention per student.
What percentage of students receive free lunch at Delta High?
45.8% of students at Delta High are eligible for free lunch, compared to the California average of 55.5%.
What is the racial and ethnic makeup of Delta High?
The largest demographic group at Delta High is Hispanic or Latino at 72.4% of enrollment, in Clarksburg, CA.
What is the Resource Investment Index for Delta High?
Delta High has a Resource Investment Index of 43/100 (typical 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 Delta High rank among public schools in Clarksburg?
By Resource Investment Index, Delta High ranks #1 of 3 public schools in Clarksburg, 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 Clarksburg on the city page.
Is Delta High a good school?
Delta High earns 43/100 on the Resource Investment Index, with class sizes smaller than 89% 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 River Delta Joint Unified?
Besides Delta High, River Delta Joint Unified also operates D. H. White Elementary (432 students), Rio Vista High (317 students), and Isleton Elementary (188 students). See the River Delta 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.