Enrollment
322
Elementary
DISTRICT 330 · STATE 465
SCHOOL COMMUNITY·SAN CARLOS ELEMENTARY·NCES 063429014383
Mariposa
750 Dartmouth Ave., San Carlos, CA 94070 · (650) 832-4201 · San Mateo County
GRADES 04–05ELEMENTARY21-SUBURBREGULAR SCHOOL322 STUDENTS
A
allk12 Grade
Scored higher than 91% 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.
- A-Beats expectations How far test scores land above or below what the share of low-income students predicts for a school in this state.
- CThree-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
23.8:1
14 FTE teachers
DISTRICT 22.0:1 · STATE 22.3:1
Free / Reduced Lunch
11%
35 students
DISTRICT 10% · 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 |
|---|---|---|
| Grade 4 | 169 | 52% |
| Grade 5 | 153 | 48% |
Student demographics
74%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 71% · 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
82.7%
CA avg 49.1% . +6.0pp since 2020
Math
82.8%
CA avg 37.7% . +10.4pp since 2020
What this means: On the CAASPP, California's statewide test, about 83 of every 100 students at this school read and write at grade level and about 83 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 6 points since 2020, while math scores are up about 10 points.
Performance levels, 2024-25
| Subject | Standard Exceeded | Standard Met | Standard Nearly Met | Standard Not Met |
|---|---|---|---|---|
| English Language Arts | 62.9% | 19.8% | 9.8% | 7.5% |
| Math | 67.1% | 15.7% | 9.7% | 7.5% |
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 year | English Language Arts | Math |
|---|---|---|
| 2024-25 | 82.7% | 82.8% |
| 2023-24 | 84.6% | 86.2% |
| 2022-23 | 82.5% | 83.6% |
| 2021-22 | 86.5% | 82.7% |
| 2020-21 | 76.7% | 72.4% |
% 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
84.1%
composite math + reading, all grades
Predicted
73.2%
based on CA schools with similar FRL share
Beats by
+10.9pp
above demographic expectation
What this means: About 84% of students here test proficient in math and reading, compared with the roughly 73% 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 Mariposa
Mariposa's state test result (84.1% proficient) is higher than 4 of the 5 schools below with a result.
| School | Students | Low-income | Proficient |
|---|---|---|---|
| Mariposa this school | 322 | 10.9% | 84.1% |
| Heather Elementary San Carlos | 320 | 10.0% | 67.5% |
| Sutter Elementary Santa Clara | 314 | 14.6% | 67.7% |
| Washington Open Elementary Santa Clara | 352 | 8.2% | 78.0% |
| Arundel Elementary San Carlos | 388 | 11.3% | 91.9% |
| Almond Elementary Los Altos | 354 | 11.6% | 81.3% |
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 Mariposa ranks
Among elementary schools| Measure | This school | In California | In San Mateo County |
|---|---|---|---|
| State test proficiency ranked highest first | 84.1% | #97 of 5,151 | #7 of 96 |
| Math proficiency ranked highest first | 82.8% | #149 of 5,172 ▼ 68 | #17 of 96 ▼ 9 |
| Reading proficiency ranked highest first | 82.7% | #172 of 5,172 ▼ 77 | #11 of 96 ▼ 4 |
| 3-year test score change ranked biggest drop first | -1.9pp | #1,256 of 5,116 | #39 of 96 |
| Enrollment ranked largest first | 322 | #4,562 of 5,915 | #68 of 106 |
| Students per teacher ranked fewest first | 23.8:1 | #3,577 of 5,352 | #75 of 99 |
| Diversity index ranked most diverse first | 73.9% | #209 of 5,354 | #10 of 99 |
| Free and reduced lunch ranked highest share first | 10.9% | #5,449 of 5,625 | #85 of 103 |
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
322
-44 (-12%) vs 2020
Student : Teacher
23.8:1
was 24.4:1
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 | 322 | 13.5 | 23.8:1 | 11% (35) |
| 2023-24 | 286 | 14.7 | 19.5:1 | 10% (28) |
| 2022-23 | 277 | 15.2 | 18.3:1 | 12% (34) |
| 2020-21 | 366 | 15 | 24.4:1 | 7% (24) |
Source: NCES Common Core of Data. Rows are the federal collections on file for Mariposa.
About Mariposa
Mariposa is a small elementary school in California, with an address in San Carlos. The grade span is 4 through 5, and enrollment is 322 students. An average school in this group (elementary schools in California) has about 465 students.
The 8 schools of San Carlos Elementary, including Mariposa, enroll 2,875 students.
At Mariposa, the largest share of students is Asian, at 32%. The remaining shares are 31% White, 19% Hispanic, and 17% multiracial. County-wide, about 31% of residents are Asian. Mariposa's diversity index is 74%, against a US figure of 70%.
Teacher staffing is 13.5 full-time equivalents, or about 23.8 students per teacher. On average, elementary schools in California have 22.3:1, compared with 23.8:1 here. About 11% of students, or 35, qualify for free or reduced-price lunch. It compares with 34% for public schools in San Mateo County.
Mariposa is graded A by allk12, scoring above 91% of California public elementary schools once test results, poverty-adjusted performance, and the recent trend are combined.
Mariposa is 10.9 points above its predicted average proficiency rate on state tests (84.1% versus 73.2%), which places it in neither the top nor the bottom 10% in California.
Across San Mateo County, the median household income is $158,855, the share of adults with a bachelor's degree or higher is 54%, and about 4% of people live in poverty. In all, San Mateo County has 176 public schools and roughly 82,403 students.
Nearest public school: Tierra Linda Middle, less than a tenth of a mile away. Within five miles are at least 8 other public schools. Mariposa is 3rd of 8 nearby schools by average proficiency rate.
The National Center for Education Statistics classifies the school's location as Suburb: Large, meaning it is in a suburban area outside a principal city, within an urbanized area with a population of 250,000 or more.
Mariposa's enrollment declined from 366 in 2020-21 to 322 in 2024-25.
If you have questions about enrollment questions, class placement, and PTA news at Mariposa, you can post them here. Posting is open to anyone connected to the school.
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 Carlos Elementary
- Tierra Linda MiddleMiddle · 451 students
- Central MiddleMiddle · 443 students
- Brittan Acres ElementaryElementary · 411 students
- Arundel ElementaryElementary · 388 students
- Heather ElementaryElementary · 320 students
- ArroyoElementary · 290 students
Other schools in San Carlos
- Tierra Linda MiddleMiddle · 451 students
- Central MiddleMiddle · 443 students
- Brittan Acres ElementaryElementary · 411 students
- Arundel ElementaryElementary · 388 students
- San Carlos Charter Learning CenterElementary · 377 students
- Heather ElementaryElementary · 320 students
Nearby schools
- Tierra Linda Middle0.0 mi · 451
- San Carlos Charter Learning Center0.1 mi · 377
- Carlmont High0.2 mi · 2,360
- Arundel Elementary0.7 mi · 388
- Central Elementary1.1 mi · 437
- Cipriani Elementary1.2 mi · 471
Frequently asked questions
About MariposaHow large is Mariposa?
Mariposa enrolls approximately 322 students in grades 04-05.
What age range does Mariposa serve?
Mariposa serves students from grade 04 through grade 05.
How many students per teacher at Mariposa?
Approximately 23.8:1 students per teacher at Mariposa.
What is the student diversity at Mariposa?
Student demographics at Mariposa are roughly 31% White, 19% Hispanic, 1% Black, 32% Asian, 17% Two or more.
Who oversees Mariposa?
Mariposa is overseen by San Carlos Elementary in San Mateo County.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.