1
What tradition at Discovery Bay Elementary should never be changed?
Community prompt from u/allk12. Replies below.
Enrollment
417
Elementary
DISTRICT 268 · STATE 465
SCHOOL COMMUNITY·BYRON UNION ELEMENTARY·NCES 060675007653
Discovery Bay Elementary
1700 Willow Lake Rd., Discovery Bay, CA 94505 · (925) 809-7540 · Contra Costa County
GRADES KG–05ELEMENTARY31-TOWNTITLE IREGULAR SCHOOL417 STUDENTS
A-
allk12 Grade
Scored higher than 78% of California public elementary schools
- A-Test scores Share of students meeting the state standard in reading, math, and other tested subjects, 2023-24 and 2024-25.
- B+Beats expectations How far test scores land above or below what the share of low-income students predicts for a school in this state.
- B-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
21.4:1
19 FTE teachers
DISTRICT 24.8:1 · STATE 22.3:1
Free / Reduced Lunch
41%
172 students
DISTRICT 36% · 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
| Grade | Students | Share |
|---|---|---|
| Kindergarten | 82 | 20% |
| Grade 1 | 53 | 13% |
| Grade 2 | 69 | 17% |
| Grade 3 | 82 | 20% |
| Grade 4 | 60 | 14% |
| Grade 5 | 71 | 17% |
This year's kindergarten class (82) is 15% larger than its 5th grade class (71).
Student demographics
66%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 69% · 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
School pathway
Students here typically continue to
Discovery Bay Elementary→Excelsior Middle
Based on grade levels within Byron Union Elementary. Attendance zones can vary; confirm enrollment with the district.
Test scores
CAASPP 2024-25 . % met or exceeded standardEnglish Language Arts
68.6%
CA avg 49.1% . +10.6pp since 2014
Math
61.3%
CA avg 37.7% . +5.3pp since 2014
What this means: On the CAASPP, California's statewide test, about 69 of every 100 students at this school read and write at grade level and about 61 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 11 points since 2014, while math scores are up about 5 points.
Performance levels, 2024-25
| Subject | Standard Exceeded | Standard Met | Standard Nearly Met | Standard Not Met |
|---|---|---|---|---|
| English Language Arts | 37.3% | 31.4% | 15.7% | 15.7% |
| Math | 38.2% | 23.0% | 21.6% | 17.2% |
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 | 68.6% | 61.3% |
| 2023-24 | 58.2% | 57.1% |
| 2022-23 | 55.6% | 61.1% |
| 2021-22 | 61.8% | 62.4% |
| 2018-19 | 66.5% | 62.2% |
| 2017-18 | 64.6% | 52.9% |
| 2016-17 | 52.6% | 50.0% |
| 2015-16 | 57.0% | 55.0% |
| 2014-15 | 58.0% | 56.0% |
% 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 · methodologyTier
AS EXPECTED
Performing as predicted given the school's student profile
Actual proficiency
61.5%
composite math + reading, all grades
Predicted
55.4%
based on CA schools with similar FRL share
Beats by
+6.1pp
above demographic expectation
What this means: About 61% of students here test proficient in math and reading, compared with the roughly 55% 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 Discovery Bay Elementary
Discovery Bay Elementary's state test result (61.5% proficient) is higher than 5 of the 5 schools below with a result.
| School | Students | Low-income | Proficient |
|---|---|---|---|
| Discovery Bay Elementary this school | 417 | 41.2% | 61.5% |
| Elysian Heights ES Arts Magnet Los Angeles | 401 | 40.4% | 55.8% |
| Brandon Elementary Goleta | 429 | 42.2% | 50.6% |
| Ripon Elementary Ripon | 460 | 39.3% | 52.9% |
| Lakewood Elementary Modesto | 395 | 42.5% | 61.3% |
| Madrone Elementary Santa Rosa | 363 | 44.9% | 41.4% |
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 Discovery Bay Elementary ranks
Among elementary schools| Measure | This school | In California | In Contra Costa County |
|---|---|---|---|
| State test proficiency ranked highest first | 61.5% | #1,045 of 5,151 | #49 of 149 |
| Math proficiency ranked highest first | 61.3% | #1,004 of 5,172 ▲ 131 | #49 of 153 ▲ 3 |
| Reading proficiency ranked highest first | 68.6% | #811 of 5,172 ▲ 542 | #41 of 153 ▲ 16 |
| 3-year test score change ranked biggest gain first | +2.8pp | #2,344 of 5,116 | #52 of 150 |
| Enrollment ranked largest first | 417 | #3,468 of 5,915 | #114 of 164 |
| Students per teacher ranked fewest first | 21.4:1 | #1,773 of 5,352 | #53 of 162 |
| Diversity index ranked most diverse first | 66.5% | #1,069 of 5,354 | #76 of 162 |
| Free and reduced lunch ranked highest share first | 41.2% | #4,282 of 5,625 | #91 of 158 |
| Enrollment change since 2017-18 ranked steepest decline first | -11.1% | #2,548 of 3,837 | #64 of 107 |
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
417
+20 (+5%) vs 2020
+19% since 1990-91, when it was 350
Student : Teacher
21.4:1
was 23.4:1
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 | 417 | 19.5 | 21.4:1 | 41% (172) |
| 2023-24 | 438 | 20 | 21.9:1 | 36% (159) |
| 2022-23 | 407 | 20 | 20.4:1 | 35% (143) |
| 2020-21 | 397 | 17 | 23.4:1 | 36% (143) |
| 2017-18 | 469 | 19 | 24.7:1 | 41% (192) |
| 2015-16 | 500 | 19 | 26.3:1 | 37% (183) |
| 2010-11 | 506 | N/A | N/A | 34% (173) |
| 2000-01 | 649 | 32 | 20.3:1 | 11% (70) |
| 1990-91 | 350 | 13 | 26.9:1 | N/A |
Source: NCES Common Core of Data. Rows are the federal collections on file for Discovery Bay Elementary.
Since 2017-18: students down 11% (469 to 417); teachers up 3% (19 to 19.5).
About Discovery Bay Elementary
Discovery Bay Elementary is the name of a medium-sized elementary school in Discovery Bay, California. A federal count lists 417 students at the school, in kindergarten through 5.
Federal data list 4 schools in Byron Union Elementary, with 1,182 students enrolled.
Discovery Bay Elementary's enrollment has no majority group, and Hispanic students are the largest at 42%. It is also 38% White, 11% multiracial, and 5% Asian. Contra Costa County's residents are about 28% Hispanic, 14 points below the school's share. The chance that two students picked at random at Discovery Bay Elementary belong to different racial or ethnic groups, known as the diversity index, is 66%.
A ratio of 21.4:1 comes from the school's 19.5 full-time-equivalent teachers. For comparison, elementary schools in California average 22.3:1. Free or reduced-price lunch eligibility was 41% in 2024-25.
The allk12 Grade for Discovery Bay Elementary is A-. Compared with California public elementary schools, the school scored higher than 78% on a mix of test scores, poverty-adjusted results, and recent trend.
Predicted from its free or reduced-price lunch share, Discovery Bay Elementary would score about 55.4%. It scores 61.5%, 6.1 points above that figure.
Contra Costa County census figures show that median household income is about $127,229, roughly 45% of adults have a four-year degree or more, and the share of residents below the poverty line is 6%. Discovery Bay Elementary is among the 280 public schools in Contra Costa County.
The next-closest public school is Timber Point Elementary, about 1.2 miles away. There are 5 more public schools inside five miles. Discovery Bay Elementary ranks 1st of 6 among nearby schools on average proficiency, with 61.5% against a local average of 46.7%.
Discovery Bay Elementary is coded as Town: Fringe in federal locale data.
From 2020-21 to 2024-25, Discovery Bay Elementary went from 397 students to 417. Staffing shifted too: the ratio moved from 23.4:1 to 21.4:1.
Threads on this page can be about school events, clubs, and volunteer needs. Anyone with firsthand experience at this school can post or comment.
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 Byron Union Elementary
- Excelsior MiddleMiddle · 377 students
- Timber Point ElementaryElementary · 362 students
- Byron Institute for Independent StudyElementary · 26 students
Other schools in Discovery Bay
- Timber Point ElementaryElementary · 362 students
- Byron Institute for Independent StudyElementary · 26 students
Nearby schools
- Timber Point Elementary1.2 mi · 362
- Byron Institute for Independent Study1.2 mi · 26
- Old River Elementary2.6 mi · 332
- Excelsior Middle2.8 mi · 377
- La Paloma High (Continuation)4.7 mi · 178
- Garin Elementary5.3 mi · 785
Frequently asked questions
About Discovery Bay ElementaryWhat is the total enrollment at Discovery Bay Elementary?
Discovery Bay Elementary enrolls approximately 417 students in grades KG-05.
Is Discovery Bay Elementary an elementary, middle, or high school?
Discovery Bay Elementary is an elementary school covering grades KG-05.
How many students per teacher at Discovery Bay Elementary?
Approximately 21.4:1 students per teacher at Discovery Bay Elementary.
What is the student diversity at Discovery Bay Elementary?
Student demographics at Discovery Bay Elementary are roughly 38% White, 42% Hispanic, 2% Black, 5% Asian, 11% Two or more.
What district is Discovery Bay Elementary in?
Discovery Bay Elementary is part of Byron Union Elementary.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.