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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
6
0 members
Enrollment and student:teacher ratio compared against other elementary schools. Free/Reduced Lunch and demographics compared against all schools.

Enrollment by grade, 2024-25

GradeStudentsShare
Kindergarten729%
Grade 1567%
Grade 27410%
Grade 37610%
Grade 4638%
Grade 5689%
Grade 6729%
Grade 712817%
Grade 815420%

This year's kindergarten class (72) is 53% smaller than its 8th grade class (154).

Student demographics
58%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 61% · STATE 62% · US 70%
White
19926%
DISTRICT 21% · STATE 20% · US 43%
Hispanic
44258%
DISTRICT 57% · STATE 56% · US 30%
Black
7610%
DISTRICT 11% · STATE 5% · US 15%
Asian
91%
DISTRICT 4% · STATE 12% · US 6%
Two+
344%
DISTRICT 7% · STATE 6% · US 5%
Native American
10%
DISTRICT 0% · STATE 0% · US 1%
Pacific Islander
20%
DISTRICT 0% · STATE 0% · US 0%
Student head counts by race/ethnicity from federal NCES enrollment data. District, state, and US figures are each group's share of all public school students in that area (US excludes territories). 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 2024-25 . % met or exceeded standard
English Language Arts
34.3%
CA avg 49.1% . -6.7pp since 2014
Math
21.0%
CA avg 37.7% . -7.0pp since 2014

What this means: On the CAASPP, California's statewide test, about 34 of every 100 students at this school read and write at grade level and about 21 of 100 do math at grade level. Across all California schools, those numbers are about 49 and 38. Reading and writing scores are down about 7 points since 2014, while math scores are down about 7 points.

Performance levels, 2024-25

SubjectStandard ExceededStandard MetStandard Nearly MetStandard Not Met
English Language Arts9.2%25.1%28.8%36.9%
Math6.7%14.3%25.8%53.3%
Share of tested students at each CAASPP level. Each student counts in one level, so a row adds to about 100%.

CAASPP results by year

School yearEnglish Language ArtsMath
2024-2534.3%21.0%
2023-2432.7%20.0%
2022-2338.8%25.1%
2021-2234.7%19.8%
2018-1942.6%31.4%
2017-1843.6%26.1%
2016-1739.3%26.8%
2015-1642.0%30.0%
2014-1541.0%28.0%
% met or exceeded standard, all students and all tested grades.
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
26.8%
composite math + reading, all grades
Predicted
48.3%
based on CA schools with similar FRL share
Beats by
-21.4pp
below demographic expectation

What this means: About 27% of students here test proficient in math and reading, below the roughly 48% typical for California schools with a similar share of low-income students. BeatsExpectations compares each school with others at the same poverty level, not by raw scores, so a school lands here when its results trail those comparable schools, which is not the same as having low scores. A higher-scoring school can still fall in this tier if similar schools score higher still.

BeatsExpectations runs a per-state regression of proficiency on free/reduced-lunch share, then scores each school by residual. How this is calculated →

Schools most like Del Sur Senior Elementary

Del Sur Senior Elementary's state test result (26.8% proficient) is higher than 0 of the 5 schools below with a result.

SchoolStudentsLow-incomeProficient
Del Sur Senior Elementary this school76353.3%26.8%
Luiseno
Corona
81955.7%40.1%
Rancho Vista Elementary
Palmdale
88655.0%36.9%
Mary W. Jackson STEAM Multilingual Magnet Elementary
Altadena
65851.8%41.8%
Cottonwood Elementary
Palmdale
65255.1%57.5%
Bullard Talent
Fresno
74447.0%52.8%
Matched among California elementary schools on enrollment, the share of students from low-income families (eligible for free or reduced-price lunch), and racial and ethnic makeup. Proficient is the average share of students meeting the state standard across all of the school's state tests in 2023-24 and 2024-25, the same combined score our test-score rankings use. Online schools and schools serving specialized populations are not matched.

Where Del Sur Senior Elementary ranks

Among elementary schools
MeasureThis schoolIn CaliforniaIn Los Angeles County
State test proficiency
ranked highest first
26.8%#3,881 of 5,151#963 of 1,126
Math proficiency
ranked highest first
21.0%#4,201 of 5,172
▼ 34
#1,028 of 1,129
▼ 14
Reading proficiency
ranked highest first
34.3%#3,522 of 5,172
▼ 51
#866 of 1,129
▼ 36
3-year test score change
ranked biggest gain first
+0.4pp#3,232 of 5,116#786 of 1,116
Enrollment
ranked largest first
763#487 of 5,915#86 of 1,300
Students per teacher
ranked fewest first
27.2:1#5,152 of 5,352#1,163 of 1,213
Diversity index
ranked most diverse first
58.4%#1,991 of 5,354#301 of 1,214
Free and reduced lunch
ranked highest share first
53.3%#3,780 of 5,625#979 of 1,276
Enrollment change since 2017-18
ranked steepest decline first
-8.7%#2,860 of 3,837#772 of 947
Ranked against other public elementary schools. Online schools are left out of every list, and test-score lists leave out schools that serve specialized populations. Each rank links to the full list. Arrows under a test-score rank show places moved since the prior test year, among schools tested both years.

4-year change

SY 2020-21 vs SY 2024-25
Enrollment
763
-31 (-4%) vs 2020
-3% since 1990-91, when it was 783
Student : Teacher
27.2:1
was 26.5:1
Source: NCES Common Core of Data

Enrollment and staffing by year

School yearStudentsTeachers (FTE)Students per teacherFree and reduced lunch
2024-2576328.127.2:153% (407)
2023-2475828.726.4:156% (425)
2022-2374127.427.1:156% (414)
2020-217943026.5:147% (375)
2017-1883631.526.6:146% (386)
2015-167152726.5:145% (323)
2010-11841N/AN/A43% (363)
2000-016123020.4:133% (200)
1990-917832729.0:1N/A
Source: NCES Common Core of Data. Rows are the federal collections on file for Del Sur Senior Elementary.

Since 2017-18: students down 9% (836 to 763); teachers down 11% (31.5 to 28.1).

About Del Sur Senior Elementary

Del Sur Senior Elementary is a high-enrollment elementary school in Lancaster, California, (ZIP code 93536). The school had 763 students in kindergarten through 8 in 2024-25. Average enrollment for elementary schools in California is about 465, so this school runs 64% bigger than that.

Del Sur Senior Elementary is a school in Westside Union Elementary. The district has 12 schools and 9,078 students.

A majority of students at Del Sur Senior Elementary, 58%, are Hispanic. Next come 26% White, 10% Black, and 4% multiracial. The county population is about 48% Hispanic. The chance that two students picked at random at Del Sur Senior Elementary belong to different racial or ethnic groups, known as the diversity index, is 58%.

The school reported 28.1 full-time-equivalent teachers in 2024-25 and a ratio of 27.2:1. The 22.3:1 average for elementary schools in California is lower than this school's figure. Eligible students account for 53% of enrollment in the free or reduced-price lunch program. That is 17 points below the 70% average for public schools in Los Angeles County.

Del Sur Senior Elementary is 21.4 points below expectations on state tests, given its student poverty level, placing it in the bottom 10% in California.

According to the American Community Survey, in Los Angeles County, median household income is about $90,112, a bachelor's degree or higher is held by about 36% of adults, and the share of residents below the poverty line is 10%. Del Sur Senior Elementary is one of 2,244 public schools in Los Angeles County, which together enroll about 1,265,907 students.

Sundown Elementary is the public school closest to Del Sur Senior Elementary, about 3.8 miles away. Inside a five-mile radius, there are 2 other public schools. On average proficiency, Del Sur Senior Elementary is 6th of 9 nearby schools with test data.

The school is in rural territory close to an urban area, according to its NCES locale (Rural: Fringe).

Del Sur Senior Elementary had 794 students in 2020-21 and 763 in 2024-25, a 4% decrease.

If you have questions about sports schedules, lunch menus, and spirit week at Del Sur Senior Elementary, you can post them here. Posting is open to anyone connected to the school.

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 and 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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