Enrollment
396
Elementary
DISTRICT 378 · STATE 465
SCHOOL COMMUNITY·SAN BRUNO PARK ELEMENTARY·NCES 063423005393
Allen (Decima M.) Elementary
875 West Angus Ave., San Bruno, CA 94066 · (650) 624-3140 · San Mateo County
GRADES KG–05ELEMENTARY21-SUBURBTITLE IREGULAR SCHOOL396 STUDENTS
B
allk12 Grade
Scored higher than 62% of California public elementary schools
- BTest 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.
- AThree-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
23.3:1
17 FTE teachers
DISTRICT 26.1:1 · STATE 22.3:1
Free / Reduced Lunch
65%
257 students
DISTRICT 55% · 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 | 73 | 18% |
| Grade 1 | 50 | 13% |
| Grade 2 | 55 | 14% |
| Grade 3 | 71 | 18% |
| Grade 4 | 63 | 16% |
| Grade 5 | 61 | 15% |
| Grade 6 | 23 | 6% |
This year's kindergarten class (73) is 217% larger than its 6th grade class (23).
Student demographics
53%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 67% · 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
Allen (Decima M.) Elementary→Parkside Intermediate
Based on grade levels within San Bruno Park Elementary. Attendance zones can vary; confirm enrollment with the district.
QUIET COMMUNITY
Be the first to start a discussion at Allen (Decima M.) Elementary.
START A DISCUSSIONTest scores
CAASPP 2024-25 . % met or exceeded standardEnglish Language Arts
49.2%
CA avg 49.1% . +13.2pp since 2014
Math
43.9%
CA avg 37.7% . +15.9pp since 2014
What this means: On the CAASPP, California's statewide test, about 49 of every 100 students at this school read and write at grade level and about 44 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 13 points since 2014, while math scores are up about 16 points.
Performance levels, 2024-25
| Subject | Standard Exceeded | Standard Met | Standard Nearly Met | Standard Not Met |
|---|---|---|---|---|
| English Language Arts | 26.5% | 22.8% | 19.1% | 31.8% |
| Math | 22.2% | 21.7% | 25.4% | 30.7% |
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 | 49.2% | 43.9% |
| 2023-24 | 41.1% | 39.8% |
| 2022-23 | 41.2% | 31.8% |
| 2021-22 | 39.6% | 34.6% |
| 2020-21 | 29.5% | 16.8% |
| 2018-19 | 47.5% | 37.4% |
| 2017-18 | 43.0% | 38.8% |
| 2016-17 | 46.4% | 39.0% |
| 2015-16 | 45.0% | 38.0% |
| 2014-15 | 36.0% | 28.0% |
% 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
43.5%
composite math + reading, all grades
Predicted
41.5%
based on CA schools with similar FRL share
Beats by
+2.0pp
above demographic expectation
What this means: About 44% of students here test proficient in math and reading, compared with the roughly 42% 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 Allen (Decima M.) Elementary
Allen (Decima M.) Elementary's state test result (43.5% proficient) is higher than 5 of the 5 schools below with a result.
| School | Students | Low-income | Proficient |
|---|---|---|---|
| Allen (Decima M.) Elementary this school | 396 | 64.9% | 43.5% |
| Christopher Elementary San Jose | 446 | 63.9% | 22.2% |
| Spruce Elementary South San Francisco | 384 | 61.2% | 21.9% |
| Del Rey Elementary San Lorenzo | 373 | 69.2% | 33.0% |
| Los Cerritos Elementary South San Francisco | 304 | 62.2% | 19.4% |
| LEAD Elementary San Mateo | 349 | 66.5% | 15.4% |
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 Allen (Decima M.) Elementary ranks
Among elementary schools| Measure | This school | In California | In San Mateo County |
|---|---|---|---|
| State test proficiency ranked highest first | 43.5% | #2,192 of 5,151 | #65 of 96 |
| Math proficiency ranked highest first | 43.9% | #1,999 of 5,172 ▲ 214 | #62 of 96 ▲ 2 |
| Reading proficiency ranked highest first | 49.2% | #2,100 of 5,172 ▲ 517 | #61 of 96 ▲ 7 |
| 3-year test score change ranked biggest gain first | +9.5pp | #679 of 5,116 | #11 of 96 |
| Enrollment ranked largest first | 396 | #3,744 of 5,915 | #40 of 106 |
| Students per teacher ranked fewest first | 23.3:1 | #3,213 of 5,352 | #73 of 99 |
| Diversity index ranked most diverse first | 52.7% | #2,548 of 5,354 | #73 of 99 |
| Free and reduced lunch ranked highest share first | 64.9% | #3,238 of 5,625 | #19 of 103 |
| Enrollment change since 2017-18 ranked fastest growth first | +17.9% | #290 of 1,139 | #7 of 13 |
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
396
+18 (+5%) vs 2020
-11% since 1990-91, when it was 443
Student : Teacher
23.3:1
was 25.2:1
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 | 396 | 17 | 23.3:1 | 65% (257) |
| 2023-24 | 376 | 16 | 23.5:1 | 60% (225) |
| 2022-23 | 305 | 13 | 23.5:1 | 61% (187) |
| 2020-21 | 378 | 15 | 25.2:1 | 48% (182) |
| 2017-18 | 336 | 8 | 42.0:1 | 61% (204) |
| 2015-16 | 360 | N/A | N/A | 52% (187) |
| 2010-11 | 345 | N/A | N/A | 57% (197) |
| 2000-01 | 485 | 24 | 20.2:1 | 35% (169) |
| 1990-91 | 443 | 16 | 27.7:1 | N/A |
Source: NCES Common Core of Data. Rows are the federal collections on file for Allen (Decima M.) Elementary.
Since 2017-18: students up 18% (336 to 396); teachers up 113% (8 to 17).
About Allen (Decima M.) Elementary
Allen (Decima M.) Elementary is one of the public schools in San Bruno, California. It is a medium-sized elementary school. The school had 396 students in kindergarten through 5 in 2024-25.
Allen (Decima M.) Elementary is among 5 schools run by San Bruno Park Elementary, which serves 2,001 students.
Roughly 66% of students at Allen (Decima M.) Elementary are Hispanic. Enrollment also includes 15% multiracial, 13% Asian, and 4% Pacific Islander. Among people living in San Mateo County, the Hispanic share is about 25%. The school's diversity index is 53%, meaning two students picked at random have a 53% chance of belonging to different racial or ethnic groups.
Its teaching staff equals 17 full-time positions, a ratio of 23.3:1. On average, elementary schools in California have 22.3:1, compared with 23.3:1 here. Around 65% of the school's students qualify for free or reduced-price meals. The 34% average for public schools in San Mateo County is 31 points lower.
Allen (Decima M.) Elementary is graded B by allk12, scoring above 62% of California public elementary schools once test results, poverty-adjusted performance, and the recent trend are combined.
After adjusting for student poverty, Allen (Decima M.) Elementary lands between the top and bottom 10% of California schools. Its average proficiency rate on state tests is 43.5%; the prediction is 41.5%.
Census estimates describe San Mateo County this way: the median household income is $158,855, 54% of adults hold a bachelor's degree or higher, and about 4% of residents live below the federal poverty line. Besides Allen (Decima M.) Elementary, San Mateo County has 175 other public schools.
Nearby, Belle Air Elementary is about 0.6 miles away. There are at least 8 more public schools inside five miles. Local comparison: Allen (Decima M.) Elementary ranks 4th of 9 nearby schools, at 43.5% versus a 49.4% average.
For locale, NCES codes Allen (Decima M.) Elementary as Suburb: Large.
Allen (Decima M.) Elementary's enrollment climbed from 378 in 2020-21 to 396 in 2024-25. From 2020-21 to 2024-25, the ratio fell from 25.2:1 to 23.3:1.
Parents and students can post about sports schedules, lunch menus, and spirit week at Allen (Decima M.) Elementary. Questions from prospective families are welcome too.
San Mateo County at a glance
View full county profilePopulation
742,340
Census ACS
Median income
$158,855
Household, ACS
Bachelor's+
54%
Adults 25+
Poverty rate
4%
Below federal line
Schools in county
176
82,403 students
Quick facts
Related schools
Other schools in San Bruno Park Elementary
- Parkside IntermediateMiddle · 491 students
- John Muir ElementaryElementary · 486 students
- Portola ElementaryElementary · 378 students
- Belle Air ElementaryElementary · 250 students
- Rollingwood ElementaryCombined
Other schools in San Bruno
- Capuchino HighHigh · 1,061 students
- Monte Verde ElementaryElementary · 517 students
- Parkside IntermediateMiddle · 491 students
- John Muir ElementaryElementary · 486 students
- Portola ElementaryElementary · 378 students
- Lomita Park ElementaryElementary · 277 students
Nearby schools
- Belle Air Elementary0.6 mi · 250
- Parkside Intermediate0.6 mi · 491
- Capuchino High1.1 mi · 1,061
- Lomita Park Elementary1.2 mi · 277
- John Muir Elementary1.3 mi · 486
- Green Hills Elementary1.5 mi · 338
Frequently asked questions
About Allen (Decima M.) ElementaryHow large is Allen (Decima M.) Elementary?
Allen (Decima M.) Elementary enrolls approximately 396 students in grades KG-05.
What age range does Allen (Decima M.) Elementary serve?
Allen (Decima M.) Elementary serves students from grade KG through grade 05.
How many teachers does Allen (Decima M.) Elementary have?
Allen (Decima M.) Elementary employs 17 FTE teachers, for a student-to-teacher ratio of 23.3:1.
What is the student diversity at Allen (Decima M.) Elementary?
Student demographics at Allen (Decima M.) Elementary are roughly 1% White, 66% Hispanic, 2% Black, 13% Asian, 15% Two or more.
What district is Allen (Decima M.) Elementary in?
Allen (Decima M.) Elementary is part of San Bruno Park Elementary.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.