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SCHOOL COMMUNITY·SAN LORENZO UNIFIED·NCES 063471005850

Del Rey Elementary

1510 Via Sonya, San Lorenzo, CA 94580 · (510) 317-5000 · Alameda County
GRADES KG–05ELEMENTARY21-SUBURBTITLE IREGULAR SCHOOL373 STUDENTS
Enrollment
373
Elementary
DISTRICT 395 · STATE 465
Student : Teacher
23.3:1
16 FTE teachers
DISTRICT 22.5:1 · STATE 22.3:1
Free / Reduced Lunch
69%
258 students
DISTRICT 75% · STATE 65%
Community
0
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
97
Grade 1
51
Grade 2
49
Grade 3
54
Grade 4
63
Grade 5
59
Student demographics
White
308%
DISTRICT 5% · STATE 20%
Hispanic
23162%
DISTRICT 60% · STATE 56%
Black
82%
DISTRICT 7% · STATE 5%
Asian
6919%
DISTRICT 21% · STATE 12%
Two+
246%
DISTRICT 4% · STATE 6%
Pacific Islander
103%
DISTRICT 2% · 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
18449%
Female
18850%

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Test scores

CAASPP 2023-24 . % met or exceeded standard
English Language Arts
32.8%
CA avg 47.1% . +8.8pp since 2014
Math
36.8%
CA avg 35.6% . +15.8pp since 2014
Source: CAASPP. All students, all grades. See all years and grades →

BeatsExpectations

Demographically-adjusted score · methodology
Tier
AS EXPECTED
Performing as predicted given the school's student profile
Actual proficiency
34.3%
composite math + reading, all grades
Predicted
38.3%
based on CA schools with similar FRL share
Beats by
-4.0pp
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
373
-153 (-29%) vs 2017
Student : Teacher
23.3:1
was 22.9:1
% White
8%
was 12%
% Hispanic
62%
was 61%
% Black
2%
was 6%
% Asian
19%
was 17%
Source: NCES Common Core of Data

About Del Rey Elementary

Located at 1510 Via Sonya, in San Lorenzo, California, Del Rey Elementary is a tight-knit primary school that educates 373 students (grades K through 5), part of San Lorenzo Unified.

San Lorenzo Unified comprises 16 schools with combined enrollment of 7,936 students; Del Rey Elementary is among them.

For racial and ethnic makeup, Del Rey Elementary lists that 62% of the student body identifies as Hispanic. The remainder consists of 19% Asian, 8% White, 6% multiracial, 3% Pacific Islander. By comparison, Alameda County as a whole is about 23% Hispanic, so the school skews meaningfully more Hispanic than its surroundings.

Looking at school resources, The school reports having 16 full-time-equivalent teachers, for a student-teacher ratio near 23.3:1. The state averages around 22.3:1, so this campus is higher than the state norm typical. Roughly 69% of students at Del Rey Elementary qualify for free or reduced-price lunch, which schools and policymakers use as a rough income-mix signal. By comparison, Alameda County runs at roughly 49%, so the school's eligibility rate is above the surrounding baseline.

With demographic context factored in, Del Rey Elementary performs roughly as the BeatsExpectations model predicts for a school with this FRL share. The predicted value is around 38.3%, the actual is 34.3%, a residual of -4.0 points.

Around the school, census data for Alameda County shows median household income runs about $129,367, roughly 52% of adults have completed at least a four-year degree, and roughly 6% of residents live below the federal poverty line. Del Rey Elementary is one of 394 public schools in Alameda County (combined enrollment of about 210,511 students).

Bay Elementary is the nearest neighboring public school, about 0.6 miles from this campus. 8 of the 8 nearest public schools sit inside a five-mile radius. Ranking that nearby cluster on reported proficiency puts Del Rey Elementary at 4th of 6; the average score across the group is 33.7%.

The school occupies a commuter-belt site.

Trend over the last 7 years. Over the past 7-year window, the student count declined 29%: 526 students in 2018 compared to 373 in 2025.

On the community side, posts here usually surface around open house dates, ride-share offers, and field-trip permission slips. Posting is open to anyone connected to the school.

Alameda County at a glance

View full county profile
Population
1,649,473
Census ACS
Median income
$129,367
Household, ACS
Bachelor's+
52%
Adults 25+
Poverty rate
6%
Below federal line
Schools in county
394
210,511 students

Quick facts

School name
Del Rey Elementary
District
San Lorenzo Unified
Address
1510 Via Sonya, San Lorenzo, CA 94580
Phone
(510) 317-5000
County
Alameda County
Level
Elementary
Grade range
KG–05
Total enrollment
373
Teachers (FTE)
16
Student–teacher ratio
23.3:1
Free/Reduced lunch
258 (69%)
Locale
21-Suburb: Large
NCES ID
063471005850
Charter school
No
Virtual school
No

Related schools

Other schools in San Lorenzo Unified
Other schools in San Lorenzo
Nearby schools

Frequently asked questions

About Del Rey Elementary
What is the total enrollment at Del Rey Elementary?
Del Rey Elementary enrolls approximately 373 students in grades KG-05.
Is Del Rey Elementary an elementary, middle, or high school?
Del Rey Elementary is an elementary school covering grades KG-05.
How many teachers does Del Rey Elementary have?
Del Rey Elementary employs 16 FTE teachers, for a student-to-teacher ratio of 23.3:1.
What is the student diversity at Del Rey Elementary?
Student demographics at Del Rey Elementary are roughly 8% White, 62% Hispanic, 2% Black, 19% Asian, 6% Two or more.
What district is Del Rey Elementary in?
Del Rey Elementary is part of San Lorenzo Unified.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.
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