Enrollment
332
Elementary
DISTRICT 324 · STATE 465
SCHOOL COMMUNITY·KNIGHTSEN ELEMENTARY·NCES 062004014006
Old River Elementary
30 Learning Ln., Brentwood, CA 94513 · (925) 626-3330 · Contra Costa County
GRADES KG–08ELEMENTARY41-RURALREGULAR SCHOOL332 STUDENTS
C+
allk12 Grade
Scored higher than 37% of California public elementary schools
- B+Test scores Share of students meeting the state standard in reading, math, and other tested subjects, 2023-24 and 2024-25.
- DBeats expectations How far test scores land above or below what the share of low-income students predicts for a school in this state.
- C-Three-year trend Change in reading and math proficiency over the last three test years.
Grades compare a school only with schools in the same state, because every state gives its own test. How grades work · Top-graded California public elementary schools
Student : Teacher
22.5:1
15 FTE teachers
DISTRICT 22.8:1 · STATE 22.3:1
Free / Reduced Lunch
15%
51 students
DISTRICT 27% · 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, 2024-25
| Grade | Students | Share |
|---|---|---|
| Kindergarten | 59 | 18% |
| Grade 1 | 31 | 9% |
| Grade 2 | 31 | 9% |
| Grade 3 | 51 | 15% |
| Grade 4 | 34 | 10% |
| Grade 5 | 32 | 10% |
| Grade 6 | 32 | 10% |
| Grade 7 | 31 | 9% |
| Grade 8 | 31 | 9% |
This year's kindergarten class (59) is 90% larger than its 8th grade class (31).
Student demographics
64%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 61% · STATE 62% · US 70%
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
Test scores
CAASPP 2024-25 . % met or exceeded standardEnglish Language Arts
55.4%
CA avg 49.1% . +3.4pp since 2016
Math
51.2%
CA avg 37.7% . +8.4pp since 2016
What this means: On the CAASPP, California's statewide test, about 55 of every 100 students at this school read and write at grade level and about 51 of 100 do math at grade level. Across all California schools, those numbers are about 49 and 38. Reading and writing scores are up about 3 points since 2016, while math scores are up about 8 points.
Performance levels, 2024-25
| Subject | Standard Exceeded | Standard Met | Standard Nearly Met | Standard Not Met |
|---|---|---|---|---|
| English Language Arts | 21.1% | 34.3% | 23.0% | 21.6% |
| Math | 23.6% | 27.6% | 29.1% | 19.7% |
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 year | English Language Arts | Math |
|---|---|---|
| 2024-25 | 55.4% | 51.2% |
| 2023-24 | 58.6% | 49.7% |
| 2022-23 | 65.4% | 49.7% |
| 2021-22 | 61.2% | 50.6% |
| 2018-19 | 51.0% | 44.9% |
| 2017-18 | 50.0% | 48.5% |
| 2016-17 | 52.0% | 42.9% |
% 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 · methodologyTier
UNDERPERFORMING
Bottom 10% of CA schools after controlling for student poverty
Actual proficiency
53.9%
composite math + reading, all grades
Predicted
70.5%
based on CA schools with similar FRL share
Beats by
-16.7pp
below demographic expectation
What this means: About 54% of students here test proficient in math and reading, below the roughly 71% 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 Old River Elementary
Old River Elementary's state test result (53.9% proficient) is higher than 0 of the 5 schools below with a result.
| School | Students | Low-income | Proficient |
|---|---|---|---|
| Old River Elementary this school | 332 | 15.4% | 53.9% |
| Toro Park Elementary Salinas | 341 | 10.0% | 68.5% |
| Forest Grove Elementary Pacific Grove | 324 | 22.2% | 58.4% |
| Vallecito Elementary San Rafael | 408 | 19.6% | 63.5% |
| Wildwood Elementary Thousand Oaks | 390 | 20.0% | 75.3% |
| Foothill Elementary Santa Barbara | 413 | 17.7% | 73.2% |
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 Old River Elementary ranks
Among elementary schools| Measure | This school | In California | In Contra Costa County |
|---|---|---|---|
| State test proficiency ranked highest first | 53.9% | #1,462 of 5,151 | #58 of 149 |
| Math proficiency ranked highest first | 51.2% | #1,505 of 5,172 ▲ 35 | #59 of 153 ▲ 4 |
| Reading proficiency ranked highest first | 55.4% | #1,663 of 5,172 ▼ 334 | #64 of 153 ▼ 8 |
| 3-year test score change ranked biggest drop first | -2.6pp | #1,054 of 5,116 | #42 of 150 |
| Enrollment ranked largest first | 332 | #4,455 of 5,915 | #145 of 164 |
| Students per teacher ranked fewest first | 22.5:1 | #2,605 of 5,352 | #76 of 162 |
| Diversity index ranked most diverse first | 63.7% | #1,423 of 5,354 | #92 of 162 |
| Free and reduced lunch ranked highest share first | 15.4% | #5,298 of 5,625 | #121 of 158 |
| Enrollment change since 2017-18 ranked fastest growth first | +65.2% | #24 of 1,139 | #1 of 42 |
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 2024-25Enrollment
332
+30 (+10%) vs 2020
Student : Teacher
22.5:1
was 23.2:1
Source: NCES Common Core of Data
Enrollment and staffing by year
| School year | Students | Teachers (FTE) | Students per teacher | Free and reduced lunch |
|---|---|---|---|---|
| 2024-25 | 332 | 14.8 | 22.5:1 | 15% (51) |
| 2023-24 | 309 | 13.5 | 22.9:1 | 16% (48) |
| 2022-23 | 305 | 14 | 21.8:1 | 16% (48) |
| 2020-21 | 302 | 13 | 23.2:1 | 16% (47) |
| 2017-18 | 201 | 9.3 | 21.6:1 | 23% (46) |
Source: NCES Common Core of Data. Rows are the federal collections on file for Old River Elementary.
Since 2017-18: students up 65% (201 to 332); teachers up 59% (9.3 to 14.8).
About Old River Elementary
Old River Elementary is a small elementary school in Brentwood, California. The school counted 332 students in 2024-25, covering kindergarten through 8. The school is 29% below the average for elementary schools in California.
Knightsen Elementary operates 2 schools. Combined enrollment is 648 students.
White students make up 46% of enrollment at Old River Elementary, the largest share of any group. The rest of enrollment is 38% Hispanic, 8% multiracial, 5% Asian, and 3% Black. On a 0 to 100 scale, the school's diversity index is 64, compared with 70 nationally.
Old River Elementary has 14.8 full-time-equivalent teachers, for a student-to-teacher ratio of about 22.5:1. That is in line with the 22.3:1 average for elementary schools in California. A common income measure, free or reduced-price lunch eligibility, is 15% at Old River Elementary. Across public schools in Contra Costa County, the average is 45%.
Old River Elementary earns a C+ on the allk12 Grade, which blends test scores, results against poverty-based expectations, and the three-year trend. It scored higher than 37% of California public elementary schools.
Predicted from its free or reduced-price lunch share, Old River Elementary would score about 70.5%. It scores 53.9%, a bottom-10% result among California schools on BeatsExpectations.
In Contra Costa County, median household income comes to about $127,229, a bachelor's degree or higher is held by about 45% of adults, and the share of residents below the poverty line is 6%. Contra Costa County counts 280 public schools with about 167,423 students.
Old River Elementary's closest public school neighbor is Byron Institute for Independent Study, about 1.9 miles away. Counting only straight-line distance, at least 8 other public schools are within five miles. On proficiency, Old River Elementary is ahead of the 45.1% nearby average, ranking 2nd of 7.
The school's federal locale classification is Rural: Fringe.
Enrollment rose 10% over 4 years, reaching 332 in 2024-25.
Parents, students, and staff can share information on pickup and drop-off, after-school programs, and teacher feedback here. Members of the school community can share what they know.
Contra Costa County at a glance
View full county profilePopulation
1,165,012
Census ACS
Median income
$127,229
Household, ACS
Bachelor's+
45%
Adults 25+
Poverty rate
6%
Below federal line
Schools in county
280
167,423 students
Quick facts
Related schools
Other schools in Brentwood
- Liberty HighHigh · 2,836 students
- Heritage HighHigh · 2,566 students
- William B. Bristow MiddleMiddle · 1,223 students
- Adams (J. Douglas) MiddleMiddle · 1,197 students
- Edna Hill MiddleMiddle · 1,047 students
- R. Paul Krey ElementaryElementary · 885 students
Other Old River Elementary schools
2 other US public schools in 1 state are named Old River Elementary. Old River Elementary is the 3rd largest of the 3.
- Old River ElementaryBakersfield, CA · 795 students
- Old River ElementaryDowney, CA · 540 students
Nearby schools
- Byron Institute for Independent Study1.9 mi · 26
- Timber Point Elementary1.9 mi · 362
- Discovery Bay Elementary2.6 mi · 417
- Knightsen Elementary3.2 mi · 316
- Summer Lake Elementary3.4 mi · 595
- La Paloma High (Continuation)3.5 mi · 178
Frequently asked questions
About Old River ElementaryHow many students attend Old River Elementary?
Old River Elementary enrolls approximately 332 students in grades KG-08.
Is Old River Elementary an elementary, middle, or high school?
Old River Elementary is an elementary school covering grades KG-08.
What is the student-teacher ratio at Old River Elementary?
The student-to-teacher ratio at Old River Elementary is approximately 22.5:1 (15 FTE teachers).
What is the racial breakdown of students at Old River Elementary?
At Old River Elementary, the student body is approximately 46% White, 38% Hispanic, 3% Black, 5% Asian, 8% Two or more.
Who oversees Old River Elementary?
Old River Elementary is overseen by Knightsen Elementary in Contra Costa County.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.