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SCHOOL COMMUNITY·WESTSIDE UNION ELEMENTARY·NCES 064212006889

Del Sur Senior Elementary

9023 West Ave. H, Lancaster, CA 93536 · (661) 942-0488 · Los Angeles County
GRADES KG–08ELEMENTARY41-RURALTITLE IREGULAR SCHOOL763 STUDENTS
Enrollment
763
Elementary
DISTRICT 720 · STATE 465
Student : Teacher
27.2:1
28 FTE teachers
DISTRICT 25.4:1 · STATE 22.3:1
Free / Reduced Lunch
53%
407 students
DISTRICT 55% · STATE 65%
Community
2
0 members
Enrollment and student:teacher ratio compared against other elementary schools. Free/Reduced Lunch and demographics compared against all schools.
Enrollment by grade
Kindergarten
72
Grade 1
56
Grade 2
74
Grade 3
76
Grade 4
63
Grade 5
68
Grade 6
72
Grade 7
128
Grade 8
154
Student demographics
White
19926%
DISTRICT 21% · STATE 20%
Hispanic
44258%
DISTRICT 57% · STATE 56%
Black
7610%
DISTRICT 11% · STATE 5%
Asian
91%
DISTRICT 4% · STATE 12%
Two+
344%
DISTRICT 7% · STATE 6%
Native American
10%
DISTRICT 0% · STATE 0%
Pacific Islander
20%
DISTRICT 0% · STATE 0%
Student head counts by race/ethnicity from federal NCES enrollment data. Very small groups may be suppressed in the source, so categories do not always sum exactly to total enrollment.
Gender split
Male
39251%
Female
37149%

Discussions

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Test scores

CAASPP 2023-24 . % met or exceeded standard
English Language Arts
32.7%
CA avg 47.1% . -8.3pp since 2014
Math
20.0%
CA avg 35.6% . -8.0pp since 2014
Source: CAASPP. All students, all grades. See all years and grades →

BeatsExpectations

Demographically-adjusted score · methodology
Tier
UNDERPERFORMING
Bottom 10% of CA schools after controlling for student poverty
Actual proficiency
26.4%
composite math + reading, all grades
Predicted
47.7%
based on CA schools with similar FRL share
Beats by
-21.4pp
below demographic expectation
BeatsExpectations runs a per-state regression of proficiency on free/reduced-lunch share, then scores each school by residual. How this is calculated →

7-year change

SY 2017-18 vs SY 2024-25
Enrollment
763
-73 (-9%) vs 2017
Student : Teacher
27.2:1
was 26.6:1
% White
26%
was 43%
% Hispanic
58%
was 42%
% Black
10%
was 9%
% Asian
1%
was 0%
Source: NCES Common Core of Data

About Del Sur Senior Elementary

Located at 9023 West Ave. H, in Lancaster, California, Del Sur Senior Elementary is an expansive elementary school that instructs 763 students (grades K through 8), one of the schools within Westside Union Elementary. That puts it 64% larger than the typical public school in California, which averages around 465 students.

Westside Union Elementary comprises 12 schools with combined enrollment of 9,078 students; Del Sur Senior Elementary is among them.

Looking at the student body, Del Sur Senior Elementary shows that the largest single group is Hispanic, at 58% of enrollment; the rest comes out to 26% White, 10% Black, 4% multiracial. That is meaningfully more Hispanic than the county at large, where the share is closer to 48%.

Looking at the economic backdrop, Del Sur Senior Elementary shows 28 full-time-equivalent teachers, putting the student-to-teacher ratio at about 27.2:1. The state averages around 22.3:1, so this campus is higher than the state norm typical. About 53% of enrolled students meet the income threshold for free or reduced-price lunch, a commonly cited indicator of low-income enrollment. By comparison, Los Angeles County runs at roughly 70%, so the school's eligibility rate is meaningfully below the surrounding baseline.

With demographic context factored in, Del Sur Senior Elementary is in the bottom 10% of California public schools. The BeatsExpectations model predicts schools with this FRL share to land around 47.7%; Del Sur Senior Elementary posts 26.4%, -21.4 points below that line.

In the surrounding community, census data for Los Angeles County shows the typical household earns roughly $90,112 per year, about 36% of the adult population holds a bachelor's degree or above, and the poverty rate sits near 10%. Del Sur Senior Elementary is one of 2244 public schools in Los Angeles County (combined enrollment of about 1,265,907 students).

The closest other public school is Sundown Elementary, roughly 3.8 miles away. 2 of the 8 nearest public schools sit inside a five-mile radius. Among the 9 schools in that immediate cluster with test data (this one included), Del Sur Senior Elementary ranks 5th on composite proficiency, below the local average of 28.6%.

The campus sits in a rural setting.

Five-year trend. Del Sur Senior Elementary's enrollment has edged down 9% since 2018, when it stood at 836 (now 763). Over the same period, the White share contracted from 43% to 26%.

On this page, posts here usually surface around pickup logistics, teacher feedback, and after-school programs. Members of the school community can share what they know.

Los Angeles County at a glance

View full county profile
Population
9,808,667
Census ACS
Median income
$90,112
Household, ACS
Bachelor's+
36%
Adults 25+
Poverty rate
10%
Below federal line
Schools in county
2,244
1,265,907 students

Quick facts

School name
Del Sur Senior Elementary
District
Westside Union Elementary
Address
9023 West Ave. H, Lancaster, CA 93536
Phone
(661) 942-0488
County
Los Angeles County
Level
Elementary
Grade range
KG–08
Total enrollment
763
Teachers (FTE)
28
Student–teacher ratio
27.2:1
Free/Reduced lunch
407 (53%)
Locale
41-Rural: Fringe
NCES ID
064212006889
Charter school
No
Virtual school
No

Related schools

Other schools in Westside Union Elementary
Other schools in Lancaster
Nearby schools

Frequently asked questions

About Del Sur Senior Elementary
How many students attend Del Sur Senior Elementary?
Del Sur Senior Elementary enrolls approximately 763 students in grades KG-08.
What age range does Del Sur Senior Elementary serve?
Del Sur Senior Elementary serves students from grade KG through grade 08.
How many students per teacher at Del Sur Senior Elementary?
Approximately 27.2:1 students per teacher at Del Sur Senior Elementary.
What is the racial breakdown of students at Del Sur Senior Elementary?
At Del Sur Senior Elementary, the student body is approximately 26% White, 58% Hispanic, 10% Black, 1% Asian, 4% Two or more.
Is Del Sur Senior Elementary public or private?
Del Sur Senior Elementary is a public K-12 school, overseen by Westside Union Elementary.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.
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