Enrollment
763
California · 2024-25 NCES data
Elementary school (grades K-5) · Lancaster, CA
Del Sur Senior Elementary
Federal NCES profile for Del Sur Senior 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 064212006889
👥 S:T ratio 0
🌟 Gifted program 70
🎓 Counselors 0
📋 Attendance 10
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Del Sur Senior Elementary earns 20/100 on the Resource Investment Index, with class sizes larger than 93% of California schools.
- #11 of 28
- elementary schools in Lancaster · Resource Index
- 20
- Resource Index · Lower
- 28.3:1
- large classes for California
- 45.5%
- free-lunch eligible
Del Sur Senior Elementary has class sizes larger than 93% of California schools. Computed live against every California school reporting to NCES.
By Resource Investment Index, Del Sur Senior Elementary ranks #11 of 28 elementary schools in Lancaster, CA.
School address
District: Westside Union Elementary · California
NCES ID 064212006889 Verify on NCES CCD record →
Teachers (FTE)
27.0
Federal CCD staff survey
Students per teacher
28.3:1
vs 21.5:1 California avg
+32% vs state
Free-lunch eligible
45.5%
vs 55.5% California avg
-18% vs state
Student-teacher ratio in context
How Del Sur Senior Elementary compares with California and U.S. medians
What stands out at Del Sur Senior Elementary
Del Sur Senior Elementary is a mid-sized elementary school in Lancaster, California, enrolling 763 students.
Class loads run heavy: 28.3:1 is larger than about 93% of California schools and 32% above the 21.5:1 state mean, so each teacher carries more students than is typical.
Economic need runs somewhat below the state's typical profile, with 45.5% of students eligible for free meals.
Enrollment of 763 puts it in the larger third of California schools by headcount.
Its Resource Investment Index lands in the lower third of 9,998 scored California schools.
Among 1,174 similarly sized, similarly resourced-need California schools statewide, it ranks #890, in the lower tier once campus size and economic need are matched.
Its student body is led by Hispanic or Latino (58%) and White (26%) (diversity index 58/100).
Counselor access is stretched at roughly 763 students per counselor, well above the ASCA-recommended 250:1 ceiling.
Chronic absenteeism is elevated: 35.9% of students missed 10% or more of school days (2021-22 Civil Rights Data Collection).
The surrounding Westside Union Elementary spends $12,392 per pupil, 25% below the California average, a leaner-resourced district than most.
Among Lancaster's elementary schools, it stands alongside Sundown Elementary (941 students): Del Sur Senior Elementary is smaller than that campus by headcount and runs leaner classes (28.3:1 vs 29.4:1).
Westside Union Elementary also operates Hillview Middle (1,100 students) and Esperanza Elementary (962 students) alongside Del Sur Senior 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 Del Sur Senior Elementary compares
Del Sur Senior 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 | 28.3:1 | ▲ 32% | 21.5:1 | 15.7:1 |
| Free-lunch eligible | 45.5% | ▼ 18% | 55.5% | 51.7% |
| Enrollment | 763 | top 19% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
28.3:1
Leaner classes than 2% of US schools, heavier class loads than most.
763
Bigger than 84% of US schools by enrollment, a large campus nationally.
Equity indicators (what these measure)
Economic need
45.5%
free-lunch eligible
- 18% 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
28.3:1
students per teacher
- 32% above state mean
Top 93% in California - lower ratio than 7% of state schools
Well above 20:1, one of the more stretched staffing loads nationally relative to enrollment.
Engagement
35.9%
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
$12,392
per pupil, district-wide
- below California avg of $16,509
Well below the U.S. average per-pupil spend, a notably leaner funding position that may affect programs, facilities, and staffing.
Support staff
Counselors1.0 FTE
Per 763 students, the combined health-and-guidance staffing load for this school.
Discipline context
0
in-school suspensions + 36 out-of-school
Suspension rate: 0.0 per 100 students. Combined in-school and out-of-school rate: 4.7 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 57.9%
White 26.1%
African American 10.0%
Two or More 4.5%
Asian 1.2%
Native Hawaiian / Pacific Islander 0.3%
American Indian / Alaska Native 0.1%
Largest group: Hispanic or Latino at 57.9% of enrollment.
Student-body diversity index 58.4/100
Simpson diversity index - at 58.4, Del Sur Senior Elementary is more mixed than the California school average of 46.0.
Programs
Gifted & talented Yes
Funding & spending
District-wide per-pupil expenditure for Westside Union Elementary, which includes Del Sur Senior Elementary.
$12,392
Per student
-25%
vs California
Avg $16,509
-25%
vs U.S.
Avg $16,593
Revenue mix
Local 27.4%
State 65.5%
Federal 7.1%
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 Sur Senior Elementary Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Hillview Middle | Larger | Similar economic need | Similar S:T ratio |
| Esperanza Elementary | Larger | Similar economic need | Lower S:T ratio |
| Sundown Elementary | Similar size | Similar economic need | Similar S:T ratio |
| Gregg Anderson Academy | Similar size | Lower economic need | Similar S:T ratio |
| Rancho Vista Elementary | Similar size | Similar economic need | Lower S:T ratio |
Comparisons are relative to Del Sur Senior Elementary's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 1,100
- Students per teacher
- 27.5:1
- Resource Index
- 26/100
- Enrollment
- 962
- Students per teacher
- 26.7:1
- Resource Index
- 7/100
- Enrollment
- 941
- Students per teacher
- 29.4:1
- Resource Index
- 10/100
- Enrollment
- 893
- Students per teacher
- 27.9:1
- Resource Index
- 30/100
- Enrollment
- 886
- Students per teacher
- 26.8:1
- Resource Index
- 17/100
Similar elementary schools in Lancaster
6 comparable elementary schools (grades K-5) serving the same city.
Sundown Elementary
Standard public school
941 students 29.4:1 students per teacher
Monte Vista Elementary
Standard public school
788 students 26.3:1 students per teacher
Ilead Lancaster Charter
Standard public school
771 students 26.6:1 students per teacher
El Dorado Elementary
Standard public school
766 students 26.4:1 students per teacher
West Wind Elementary
Standard public school
757 students 29.1:1 students per teacher
Lincoln Elementary
Standard public school
738 students 32.1:1 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 (~763 students)
Similar student-teacher ratio (~28.3:1)
Next steps
Verify locally before acting on Del Sur Senior Elementary's federal record.
- Compare Del Sur Senior Elementary against another school. Compare schools
- Westside Union Elementary'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 Sur Senior Elementary
How many students attend Del Sur Senior Elementary?
Del Sur Senior Elementary has 763 students enrolled. It is an elementary school in Lancaster, CA.
What is the student-teacher ratio at Del Sur Senior Elementary?
The student-teacher ratio at Del Sur Senior Elementary is 28.3:1, which is 32% higher than the California average of 21.5:1 and 80% higher than the national average of 15.7:1.
What percentage of students receive free lunch at Del Sur Senior Elementary?
45.5% of students at Del Sur Senior Elementary are eligible for free lunch, compared to the California average of 55.5%.
What is the racial and ethnic makeup of Del Sur Senior Elementary?
The largest demographic group at Del Sur Senior Elementary is Hispanic or Latino at 57.9% of enrollment, in Lancaster, CA. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 58.4/100.
What is the Resource Investment Index for Del Sur Senior Elementary?
Del Sur Senior 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 Del Sur Senior Elementary rank among elementary schools in Lancaster?
By Resource Investment Index, Del Sur Senior Elementary ranks #11 of 28 elementary schools in Lancaster, 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 Lancaster on the city page.
Is Del Sur Senior Elementary a good school?
Del Sur Senior Elementary earns 20/100 on the Resource Investment Index, with class sizes larger than 93% 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 Westside Union Elementary?
Besides Del Sur Senior Elementary, Westside Union Elementary also operates Hillview Middle (1,100 students), Esperanza Elementary (962 students), and Sundown Elementary (941 students). See the Westside Union Elementary 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.