Beta You're viewing our redesigned school page. Prefer the classic layout?

Del Sur Senior Elementary

Public Grades K-8
4126th
SchoolDigger Rank ?
of 5,817 California Elementary Schools
Better than 29% of California elementary schools
Summary

Del Sur Senior Elementary is a K–8 school in Lancaster, California, serving 763 students in the Westside Union Elementary district. In 2025–26, all-grades proficiency was 35% in English language arts (ELA), 26% in math and 23% in science. The most important finding is that the school’s results were below both district and state levels in all three subjects: by 10, 6 and 6 percentage points compared with the district, and by 14, 12 and 13 points compared with the state.

Within the 11 nearby schools, Del Sur ranked sixth in each subject, close to the group’s middle. Its ELA result was 2 points below the nearby average, while math and science were each about 1 point above. Grade-level results show a more mixed picture: third-grade math reached 51%, 4 points above the state and 9 above the district, and was higher than other nearby schools with a published result except Gregg Anderson Academy. In contrast, fourth- and sixth-grade ELA were 22% and 21%, respectively—24 and 27 points below state results. These grade-level differences are important context alongside the all-grades comparisons.

Over 2022–23 to 2025–26, ELA proficiency fell 4 percentage points, math rose 1 point and science fell 1 point; the gaps with the state widened in each subject. SchoolDigger gives Del Sur 1 star and a 29th-percentile statewide ranking, up from 23rd the prior year but below its 50th-percentile standing in 2021–22. Its Special Education Students ranking also changed notably: from the 59th percentile in 2023–24, compared with the school’s overall 25th percentile, to the 23rd percentile in 2025–26, compared with 29th overall. In 2024–25, the school’s student-teacher ratio was 27.1, the highest among the nearby schools; the other schools averaged 25.0. It reported 53% free/reduced lunch eligible (sy 2024–25), below the nearby-school average of 68% for the same measure and year. Nearby schools serve different grade spans, so comparisons are descriptive rather than fully like-for-like.

763
Students ?
27.1
Student/teacher ratio ?
$15,233
Per pupil spending ?
53.3%
Free/reduced lunch eligible (2024-25) ?
All students in California receive free school meals.
92%
Kindergartners with all required immunizations (2024-25)
Exemptions: 0% (any vaccine)
 9023 West Ave. H
       Lancaster, CA  93536-8011

(661) 942-0488

District: Westside Union Elementary


Students who attend Del Sur Senior Elementary usually attend:

High:    Quartz Hill High
Racial breakdown:

Hispanic:
57.9%
White:
26.1%
African American:
10.0%
more
 See top rated California elementary schools

 Compare Del Sur Senior Elementary to nearby elementary schools!
At a glance
▼ Ranking trend: Declining — 48th percentile in 2015 → 29th in 2026
Worth a look
!Test scores below the California average (30% vs 42% meeting standards)
!Ranking has slipped — down 19 percentile points since 2015
!Some student groups rank well below the school's overall statewide standing
Students meeting standards (2025-2026) ?
This school30%
District avg38%
California avg42%
Elementary school
4,126th of 5,817
California public elementary schools ?
Bottom 29%▼ down 15 pts since 2016
From bottom 44% (2016) to bottom 29% (2026)
See the entire ranking list of California Elementary Schools →
★★★★★
SchoolDigger rating ?
Middle school
1,804th of 2,740
California public middle schools ?
Bottom 34%▼ down 28 pts since 2016
From top 38% (2016) to bottom 34% (2026)
See the entire ranking list of California Middle Schools →
★★★★★
SchoolDigger rating ?
9th of 10Elementary Schools in the Westside Union Elementary
829th of 1,530Westside Union Elementary among California districts
Statewide rank percentile over time (100 = the top-ranked school in the state; click a legend item to add a student group)
Elementary school ranking
Show full rank history (all student groups)

All Students

YearAvg scoreStatewide rankCalifornia percentileRating
202628.44126 of 581729.1%★☆☆☆☆
202524.14492 of 585723.3%★☆☆☆☆
202424.64403 of 586925.0%★☆☆☆☆
202338.63238 of 585944.7%★★☆☆☆
202242.02962 of 588349.7%★★☆☆☆
201940.93135 of 578945.8%★★☆☆☆
201835.53433 of 566239.4%★★☆☆☆
201732.83623 of 569236.3%★★☆☆☆
201639.33119 of 561444.4%★★☆☆☆
201542.42894 of 561148.4%★★☆☆☆
201367.61691 of 553069.4%★★★☆☆
201268.91584 of 539070.6%★★★★☆
201166.51667 of 537769.0%★★★☆☆
201057.72129 of 531459.9%★★★☆☆
200968.21524 of 519370.7%★★★★☆
200852.92227 of 511356.4%★★★☆☆
200763.61652 of 511367.7%★★★☆☆
200665.81510 of 481868.7%★★★☆☆
200574.01166 of 482275.8%★★★★☆
200469.81307 of 480972.8%★★★★☆

African American

YearAvg scoreStatewide rankCalifornia percentileRating
201941.4408 of 74745.4%★★☆☆☆

Disabled

YearAvg scoreStatewide rankCalifornia percentileRating
201938.51368 of 258547.1%★★☆☆☆
201826.91593 of 212825.1%★☆☆☆☆

English Language Learner

YearAvg scoreStatewide rankCalifornia percentileRating
202421.03034 of 31624.0%☆☆☆☆☆

Female

YearAvg scoreStatewide rankCalifornia percentileRating
202629.93878 of 558130.5%★★☆☆☆
202524.54293 of 559723.3%★☆☆☆☆
202424.34321 of 561223.0%★☆☆☆☆
202337.63173 of 560943.4%★★☆☆☆
202242.12874 of 563549.0%★★☆☆☆
201947.52643 of 549251.9%★★★☆☆
201843.12885 of 541346.7%★★☆☆☆

Hispanic

YearAvg scoreStatewide rankCalifornia percentileRating
202630.53702 of 509427.3%★☆☆☆☆
202523.04238 of 510717.0%★☆☆☆☆
202423.84210 of 510717.6%★☆☆☆☆
202339.12975 of 508741.5%★★☆☆☆
202245.12514 of 508450.6%★★★☆☆
201957.51823 of 496363.3%★★★☆☆
201844.82567 of 483046.9%★★☆☆☆

Low Socio Economic Status

YearAvg scoreStatewide rankCalifornia percentileRating
202629.24001 of 542326.2%★☆☆☆☆
202526.24265 of 546021.9%★☆☆☆☆
202426.04294 of 551722.2%★☆☆☆☆
202332.83666 of 536331.6%★★☆☆☆
202231.93687 of 526430.0%★☆☆☆☆
201936.53390 of 517334.5%★★☆☆☆
201831.93628 of 508428.6%★☆☆☆☆

Male

YearAvg scoreStatewide rankCalifornia percentileRating
202628.24024 of 560328.2%★☆☆☆☆
202524.34351 of 562822.7%★☆☆☆☆
202425.74210 of 564325.4%★☆☆☆☆
202339.53088 of 563845.2%★★☆☆☆
202241.82905 of 566348.7%★★☆☆☆
201934.43433 of 551037.7%★★☆☆☆
201828.83791 of 543130.2%★★☆☆☆

Special Education

YearAvg scoreStatewide rankCalifornia percentileRating
202627.12250 of 292723.1%★☆☆☆☆
202446.01092 of 263558.6%★★★☆☆
202343.81090 of 242055.0%★★★☆☆

White

YearAvg scoreStatewide rankCalifornia percentileRating
202626.41975 of 253622.1%★☆☆☆☆
202524.92065 of 259820.5%★☆☆☆☆
202416.42295 of 265113.4%★☆☆☆☆
202330.91961 of 266126.3%★☆☆☆☆
202229.92019 of 272625.9%★☆☆☆☆
201921.92344 of 283417.3%★☆☆☆☆
201819.12343 of 273714.4%★☆☆☆☆
Middle school ranking
Show full rank history (all student groups)

All Students

YearAvg scoreStatewide rankCalifornia percentileRating
202630.61804 of 274034.2%★★☆☆☆
202530.31819 of 276134.1%★★☆☆☆
202435.11621 of 278341.8%★★☆☆☆
202342.31389 of 278150.1%★★★☆☆
202226.71917 of 274030.0%★★☆☆☆
201942.01383 of 271549.1%★★☆☆☆
201835.31510 of 248039.1%★★☆☆☆
201741.71342 of 250846.5%★★☆☆☆
201656.3949 of 249762.0%★★★☆☆
201554.9984 of 247760.3%★★★☆☆
201364.7761 of 237968.0%★★★☆☆
201274.9438 of 225980.6%★★★★☆
201161.3776 of 223665.3%★★★☆☆
201059.9794 of 217963.6%★★★☆☆
200962.4697 of 206366.2%★★★☆☆
200849.1945 of 200552.9%★★★☆☆
200751.0884 of 199955.8%★★★☆☆
200653.8745 of 180458.7%★★★☆☆
200550.7790 of 177755.5%★★★☆☆
200448.6804 of 176954.6%★★★☆☆

African American

YearAvg scoreStatewide rankCalifornia percentileRating
202641.0331 of 59444.3%★★☆☆☆
202553.9236 of 60961.2%★★★☆☆
202455.0230 of 62763.3%★★★☆☆
202339.4349 of 61343.1%★★☆☆☆
202225.3495 of 63722.3%★☆☆☆☆
201925.3501 of 64322.1%★☆☆☆☆
201826.1465 of 60022.5%★☆☆☆☆

Disabled

YearAvg scoreStatewide rankCalifornia percentileRating
202238.3812 of 153147.0%★★☆☆☆
201944.7645 of 149156.7%★★★☆☆
201834.9805 of 136941.2%★★☆☆☆

Female

YearAvg scoreStatewide rankCalifornia percentileRating
202636.81485 of 251641.0%★★☆☆☆
202533.81555 of 253338.6%★★☆☆☆
202434.61522 of 255140.3%★★☆☆☆
202342.31259 of 253150.3%★★★☆☆
202228.01731 of 250931.0%★★☆☆☆
201935.61422 of 238040.3%★★☆☆☆
201830.61537 of 226232.1%★★☆☆☆

Hispanic

YearAvg scoreStatewide rankCalifornia percentileRating
202634.81488 of 235736.9%★★☆☆☆
202525.71801 of 239524.8%★☆☆☆☆
202428.31707 of 238828.5%★☆☆☆☆
202352.2923 of 237461.1%★★★☆☆
202231.91561 of 235933.8%★★☆☆☆
201953.9835 of 221362.3%★★★☆☆
201842.21122 of 207245.8%★★☆☆☆

Low Socio Economic Status

YearAvg scoreStatewide rankCalifornia percentileRating
202631.21717 of 252932.1%★★☆☆☆
202519.72152 of 254215.3%★☆☆☆☆
202431.51710 of 257933.7%★★☆☆☆
202338.31393 of 253145.0%★★☆☆☆
202225.01894 of 245822.9%★☆☆☆☆
201934.91496 of 236936.9%★★☆☆☆
201825.41743 of 223021.8%★☆☆☆☆

Male

YearAvg scoreStatewide rankCalifornia percentileRating
202624.71868 of 251425.7%★☆☆☆☆
202525.81835 of 253427.6%★☆☆☆☆
202434.71510 of 255240.8%★★☆☆☆
202340.71313 of 253848.3%★★☆☆☆
202226.41794 of 252729.0%★☆☆☆☆
201946.81110 of 240753.9%★★★☆☆
201839.11279 of 227343.7%★★☆☆☆

Multi-racial

YearAvg scoreStatewide rankCalifornia percentileRating
202512.8641 of 72611.7%★☆☆☆☆

Special Education

YearAvg scoreStatewide rankCalifornia percentileRating
202630.01135 of 160529.3%★☆☆☆☆
202540.0800 of 156648.9%★★☆☆☆
202446.1640 of 155258.8%★★★☆☆
202355.2462 of 153169.8%★★★☆☆

White

YearAvg scoreStatewide rankCalifornia percentileRating
202620.71203 of 149019.3%★☆☆☆☆
202538.8936 of 152038.4%★★☆☆☆
202441.3875 of 153743.1%★★☆☆☆
202334.6996 of 154335.5%★★☆☆☆
202220.61269 of 155518.4%★☆☆☆☆
201927.11180 of 160226.3%★☆☆☆☆
201831.41054 of 149629.5%★☆☆☆☆
How student groups rank statewide ? (each group's percentile vs the same group at other schools — higher is better; the +/- beside each compares the group with this school's overall percentile)
Elementary school
Disabled (2019)47th percentile~ school
African American (2019)45th percentile~ school
Female (2026)31st percentile~ school
Male (2026)28th percentile~ school
Hispanic (2026)27th percentile~ school
Low Socio Economic Status (2026)26th percentile-3 vs school
Special Education (2026)23rd percentile-6 vs school
White (2026)22nd percentile-7 vs school
English Language Learner (2024)4th percentile-21 vs school
Middle school
Disabled (2022)47th percentile+17 vs school
African American (2026)44th percentile+10 vs school
Female (2026)41st percentile+7 vs school
Hispanic (2026)37th percentile+3 vs school
Low Socio Economic Status (2026)32nd percentile~ school
Special Education (2026)29th percentile-5 vs school
Male (2026)26th percentile-8 vs school
White (2026)19th percentile-15 vs school
Multi-racial (2025)12th percentile-22 vs school
By subject vs California (2025-2026) ?
English Language Arts/Literacy35%-14 vs state
Mathematics26%-12 vs state
Science23%-13 vs state

★
No ratings yet
Be the first to rate Del Sur Senior Elementary and help other families decide.
Rate Del Sur Senior Elementary
Have first-hand experience? A quick rating - and a sentence or two about what stands out (teachers, academics, safety, communication) - helps other families know what to expect.
Takes about a minute. We email you a link to verify your review - your address is never shown publicly.
Tap a star to rate
Reviews
No written reviews yet. If you know this school, be the first to share what stands out.



Schools Near Del Sur Senior Elementary

Ranking:
Map legend
E Elementary M Middle H High A Alternative P Private






Frequently Asked Questions about Del Sur Senior Elementary

Students at Del Sur Senior Elementary are 58% Hispanic, 26% White, 10% African American, 4% Two or more races, 1% Asian.

Del Sur Senior Elementary ranks 4126th of 5817 California elementary schools. SchoolDigger rates this school 1 star out of 5.

In the 2024-25 school year, 763 students attended Del Sur Senior Elementary.

Students who attend Del Sur Senior Elementary usually go on to attend:

High : Quartz Hill High

Rate Del Sur Senior Elementary!



Sign up for updates!

Be the first to know when there is an update for Del Sur Senior Elementary!


Latest California data All new data »
2024–25 school spending data (updated)NewNov 2, 2026
2013–14 through 2024–25 immunization rates (updated)Oct 19, 2026
2025–26 attendance data, dropout rates & graduation ratesOct 15, 2026
2025–26 CAST, CSA Spanish & Smarter Balanced Assessments scoresOct 15, 2026


SchoolDigger data sources: National Center for Education Statistics, U.S. Department of Education, the U.S. Census Bureau and the California Department of Education.

IMPORTANT DISCLAIMERS: Not all boundaries are included. We make every effort to ensure that boundaries are up-to-date. But it's important to note that these are approximations and are for general informational purposes only. To verify legal descriptions of boundaries or school locations, contact your local tax assessor's office and/or school district.

Diagnostics