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SCHOOL COMMUNITY·RIO ELEMENTARY·NCES 063276011833

Rio Del Mar

3150 Thames River, Oxnard, CA 93036 · (805) 485-0560 · Ventura County
GRADES KG–05ELEMENTARY12-CITYTITLE IREGULAR SCHOOL499 STUDENTS
Enrollment
499
Elementary
DISTRICT 578 · STATE 465
Student : Teacher
26.0:1
19 FTE teachers
DISTRICT 24.5:1 · STATE 22.3:1
Free / Reduced Lunch
76%
378 students
DISTRICT 75% · 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
Kindergarten11723%
Grade 16313%
Grade 27816%
Grade 38918%
Grade 48918%
Grade 56313%

This year's kindergarten class (117) is 86% larger than its 5th grade class (63).

Student demographics
29%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 25% · STATE 62% · US 70%
White
306%
DISTRICT 5% · STATE 20% · US 43%
Hispanic
41884%
DISTRICT 86% · STATE 56% · US 30%
Black
102%
DISTRICT 2% · STATE 5% · US 15%
Asian
224%
DISTRICT 5% · STATE 12% · US 6%
Two+
163%
DISTRICT 2% · STATE 6% · US 5%
Pacific Islander
31%
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
26253%
Female
23747%

Discussions

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Test scores

CAASPP 2024-25 . % met or exceeded standard
English Language Arts
32.3%
CA avg 49.1% . -1.7pp since 2014
Math
31.9%
CA avg 37.7% . +6.9pp since 2014

What this means: On the CAASPP, California's statewide test, about 32 of every 100 students at this school read and write at grade level and about 32 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 2 points since 2014, while math scores are up about 7 points.

Performance levels, 2024-25

SubjectStandard ExceededStandard MetStandard Nearly MetStandard Not Met
English Language Arts15.7%16.6%21.7%46.0%
Math10.2%21.7%30.6%37.5%
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
2024-2532.3%31.9%
2023-2435.7%33.6%
2022-2339.0%38.1%
2021-2243.1%30.7%
2020-2133.0%18.4%
2018-1941.5%42.5%
2017-1845.4%40.4%
2016-1740.0%38.8%
2015-1644.0%38.0%
2014-1534.0%25.0%
% 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
AS EXPECTED
Performing as predicted given the school's student profile
Actual proficiency
33.3%
composite math + reading, all grades
Predicted
35.1%
based on CA schools with similar FRL share
Beats by
-1.9pp
below demographic expectation

What this means: About 33% of students here test proficient in math and reading, compared with the roughly 35% typical for California schools with a similar share of low-income students. BeatsExpectations measures results against demographically similar schools rather than by raw scores, and this school falls within the typical range, neither among California's top nor bottom 10%.

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 Rio Del Mar

Rio Del Mar's state test result (33.3% proficient) is higher than 2 of the 5 schools below with a result.

SchoolStudentsLow-incomeProficient
Rio Del Mar this school49975.8%33.3%
Meadow View Elementary
Santa Rosa
46875.2%23.0%
Maxwell Academy (PK-8)
Duarte
50474.2%36.2%
Glen View Elementary
Gilroy
50874.0%20.1%
Sierra Vista Elementary
La Habra
46775.4%39.8%
Richman Elementary
Fullerton
47077.2%39.9%
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 Rio Del Mar ranks

Among elementary schools
MeasureThis schoolIn CaliforniaIn Ventura County
State test proficiency
ranked highest first
33.3%#3,135 of 5,151#74 of 121
Math proficiency
ranked highest first
31.9%#3,025 of 5,172
▼ 313
#69 of 122
▼ 6
Reading proficiency
ranked highest first
32.3%#3,747 of 5,172
▼ 588
#89 of 122
▼ 15
3-year test score change
ranked biggest drop first
-4.8pp#602 of 5,116#13 of 121
Enrollment
ranked largest first
499#2,446 of 5,915#44 of 130
Students per teacher
ranked fewest first
26.0:1#4,849 of 5,352#117 of 124
Diversity index
ranked most diverse first
29.1%#3,987 of 5,354#85 of 124
Free and reduced lunch
ranked highest share first
75.8%#2,570 of 5,625#40 of 127
Enrollment change since 2017-18
ranked steepest decline first
-10.1%#2,680 of 3,837#71 of 99
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
499
+101 (+25%) vs 2020
+16% since 2010-11, when it was 432
Student : Teacher
26.0:1
was 24.9:1
Source: NCES Common Core of Data

Enrollment and staffing by year

School yearStudentsTeachers (FTE)Students per teacherFree and reduced lunch
2024-2549919.226.0:176% (378)
2023-244501726.5:163% (284)
2022-234161626.0:156% (235)
2020-213981624.9:162% (248)
2017-185552225.2:158% (321)
2015-165312026.6:172% (380)
2010-11432N/AN/A67% (291)
Source: NCES Common Core of Data. Rows are the federal collections on file for Rio Del Mar.

Since 2017-18: students down 10% (555 to 499); teachers down 13% (22 to 19.2).

About Rio Del Mar

Rio Del Mar is an elementary school in Oxnard, California, according to federal school records. Classes run from kindergarten through 5, and the school has 499 students.

District-wide, Rio Elementary has 9 schools and 5,250 students.

The student body at Rio Del Mar is 84% Hispanic. Beyond that, enrollment is 6% White, 4% Asian, 3% multiracial, and 2% Black. The Hispanic share of the county population is lower, at 44%. Rio Del Mar's diversity index is 29%, against a US figure of 70%.

Rio Del Mar's 19.2 full-time-equivalent teachers put its ratio at 26.0:1. On average, elementary schools in California have 22.3:1, compared with 26.0:1 here. The school's rate of free or reduced-price lunch eligibility is 76%. The rate at public schools in Ventura County averages 59%, lower than here.

Rio Del Mar's average proficiency rate on state tests of 33.3% is 1.9 points below the 35.1% the model predicts from its lunch-eligibility share.

According to the American Community Survey, in Ventura County, the median household income is $109,797, roughly 36% of adults have a four-year degree or more, and the share of residents below the poverty line is 7%. There are 238 public schools in Ventura County, enrolling about 147,841 students in all.

The school nearest to Rio Del Mar is Rio Vista Middle, at a distance of about 0.2 miles. There are at least 8 other public schools within five miles. On state test proficiency, Rio Del Mar ranks 2nd in a group of 8 nearby schools.

Under the NCES locale system, Rio Del Mar is City: Mid-size.

Over 4 years, Rio Del Mar's enrollment climbed 25%, to 499. The number of students per teacher rose from 24.9 to 26.0 over 4 years.

Parents and students can post about sports tryouts, band and choir, and theater at Rio Del Mar. Alumni can share how the school prepared them.

Ventura County at a glance

View full county profile
Population
837,469
Census ACS
Median income
$109,797
Household, ACS
Bachelor's+
36%
Adults 25+
Poverty rate
7%
Below federal line
Schools in county
238
147,841 students

Quick facts

School name
Rio Del Mar
District
Rio Elementary
Address
3150 Thames River, Oxnard, CA 93036
Phone
(805) 485-0560
County
Ventura County
Level
Elementary
Grade range
KG–05
Total enrollment
499
Teachers (FTE)
19
Student–teacher ratio
26.0:1
Free and reduced lunch
378 (76%)
Locale
12-City: Mid-size
NCES ID
063276011833
Charter school
No
Virtual school
No

Related schools

Other schools in Rio Elementary
Other schools in Oxnard
Nearby schools

Frequently asked questions

About Rio Del Mar
How large is Rio Del Mar?
Rio Del Mar enrolls approximately 499 students in grades KG-05.
Is Rio Del Mar an elementary, middle, or high school?
Rio Del Mar is an elementary school covering grades KG-05.
How many students per teacher at Rio Del Mar?
Approximately 26.0:1 students per teacher at Rio Del Mar.
What is the racial breakdown of students at Rio Del Mar?
At Rio Del Mar, the student body is approximately 6% White, 84% Hispanic, 2% Black, 4% Asian, 3% Two or more.
What district is Rio Del Mar in?
Rio Del Mar is part of Rio Elementary.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.
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