Enrollment
248
Elementary
DISTRICT 350 · STATE 465
SCHOOL COMMUNITY·MOUNTAIN VIEW WHISMAN·NCES 062628003923
Mariano Castro Elementary
500 Toft St., Mountain View, CA 94040 · (650) 526-3590 · Santa Clara County
GRADES KG–05ELEMENTARY13-CITYTITLE IREGULAR SCHOOL248 STUDENTS
F
allk12 Grade
Scored higher than 3% of California public elementary schools
- DTest 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
17.7:1
14 FTE teachers
DISTRICT 20.1:1 · STATE 22.3:1
Free / Reduced Lunch
83%
205 students
DISTRICT 30% · 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 | 61 | 25% |
| Grade 1 | 32 | 13% |
| Grade 2 | 35 | 14% |
| Grade 3 | 40 | 16% |
| Grade 4 | 44 | 18% |
| Grade 5 | 36 | 15% |
This year's kindergarten class (61) is 69% larger than its 5th grade class (36).
Student demographics
17%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 72% · 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
15.1%
CA avg 49.1% . -27.9pp since 2014
Math
14.6%
CA avg 37.7% . -24.4pp since 2014
What this means: On the CAASPP, California's statewide test, about 15 of every 100 students at this school read and write at grade level and about 15 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 28 points since 2014, while math scores are down about 24 points.
Performance levels, 2024-25
| Subject | Standard Exceeded | Standard Met | Standard Nearly Met | Standard Not Met |
|---|---|---|---|---|
| English Language Arts | 6.7% | 8.4% | 10.9% | 74.0% |
| Math | 6.5% | 8.1% | 21.9% | 63.4% |
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 | 15.1% | 14.6% |
| 2023-24 | 20.6% | 13.8% |
| 2022-23 | 21.6% | 16.2% |
| 2021-22 | 21.9% | 16.0% |
| 2018-19 | 48.2% | 32.9% |
| 2017-18 | 47.0% | 38.9% |
| 2016-17 | 45.3% | 40.9% |
| 2015-16 | 38.0% | 33.0% |
| 2014-15 | 43.0% | 39.0% |
% 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
UNDERPERFORMING
Bottom 10% of CA schools after controlling for student poverty
Actual proficiency
16.3%
composite math + reading, all grades
Predicted
31.1%
based on CA schools with similar FRL share
Beats by
-14.8pp
below demographic expectation
What this means: About 16% of students here test proficient in math and reading, below the roughly 31% 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 Mariano Castro Elementary
Mariano Castro Elementary's state test result (16.3% proficient) is higher than 1 of the 4 schools below with a result.
| School | Students | Low-income | Proficient |
|---|---|---|---|
| Mariano Castro Elementary this school | 248 | 82.7% | 16.3% |
| Lowell Elementary San Jose | 261 | 85.1% | 8.4% |
| Garvanza Elementary School Technology and Leadership Magnet Los Angeles | 239 | 81.6% | 45.4% |
| Cresson Elementary Norwalk | 243 | 82.3% | 53.5% |
| Los Altos Elementary San Diego | 263 | 82.1% | 27.6% |
| Los Angeles Leadership Primary Academy Los Angeles | 265 | 82.3% | N/A |
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 Mariano Castro Elementary ranks
Among elementary schools| Measure | This school | In California | In Santa Clara County |
|---|---|---|---|
| State test proficiency ranked highest first | 16.3% | #4,865 of 5,151 | #217 of 226 |
| Math proficiency ranked highest first | 14.6% | #4,776 of 5,172 ▼ 3 | #215 of 226 ▲ 2 |
| Reading proficiency ranked highest first | 15.1% | #5,044 of 5,172 ▼ 355 | #221 of 226 ▼ 12 |
| 3-year test score change ranked biggest drop first | -4.1pp | #715 of 5,116 | #59 of 225 |
| Enrollment ranked largest first | 248 | #5,129 of 5,915 | #238 of 255 |
| Students per teacher ranked fewest first | 17.7:1 | #221 of 5,352 | #13 of 247 |
| Diversity index ranked most diverse first | 16.7% | #4,611 of 5,354 | #235 of 247 |
| Free and reduced lunch ranked highest share first | 82.7% | #1,904 of 5,625 | #19 of 252 |
| Enrollment change since 2017-18 ranked steepest decline first | -2.0% | #3,642 of 3,837 | #181 of 189 |
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
248
-58 (-19%) vs 2020
-61% since 1990-91, when it was 632
Student : Teacher
17.7:1
was 23.5:1
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 | 248 | 14 | 17.7:1 | 83% (205) |
| 2023-24 | 257 | 14 | 18.4:1 | 74% (191) |
| 2022-23 | 248 | 13 | 19.1:1 | 81% (200) |
| 2020-21 | 306 | 13 | 23.5:1 | 84% (256) |
| 2017-18 | 253 | 12 | 21.1:1 | 88% (223) |
| 2015-16 | 305 | 14 | 21.8:1 | 82% (251) |
| 2010-11 | 539 | N/A | N/A | 63% (338) |
| 2000-01 | 508 | 26 | 19.5:1 | 79% (400) |
| 1990-91 | 632 | 29 | 21.8:1 | N/A |
Source: NCES Common Core of Data. Rows are the federal collections on file for Mariano Castro Elementary.
Since 2017-18: students down 2% (253 to 248); teachers up 17% (12 to 14).
About Mariano Castro Elementary
Mariano Castro Elementary is a low-enrollment elementary school in California, located in Mountain View. The school enrolls 248 students in kindergarten through 5. That compares with an average of about 465 students for elementary schools in California.
Mountain View Whisman has 4,624 students spread across 11 schools.
A large majority of enrollment at Mariano Castro Elementary is Hispanic, at 91%. After that, the student body is 4% Asian and 4% White. Among all residents of Santa Clara County, the Hispanic share is about 25%. The diversity index for Mariano Castro Elementary is 17%. For US public schools as a whole it is 70%.
Its ratio of 17.7:1 is based on 14 full-time-equivalent teachers. Elementary schools in California average 22.3:1, 4.6 more students per teacher than here. The share of students eligible for free or reduced-price lunch is 83%. The rate at public schools in Santa Clara County averages 37%, lower than here.
Mariano Castro Elementary holds an F allk12 Grade, placing it above 3% of California public elementary schools.
After accounting for student poverty, Mariano Castro Elementary is in the bottom 10% of California schools. Its average proficiency rate across its state test results of 16.3% is 14.8 points below the 31.1% predicted for its lunch-eligibility share.
Looking at the county, Santa Clara County, median household income comes to about $164,281, a bachelor's degree or higher is held by about 57% of adults, and the poverty rate is about 4%. The county has 412 public schools and about 230,059 students.
Gabriela Mistral Elementary, less than a tenth of a mile away, is the closest public school. Other public schools within five miles number at least 8. Compared with its nearest neighbors, Mariano Castro Elementary ranks 8th of 8 on average proficiency.
The school is inside a principal city with a population under 100,000, according to its NCES locale (City: Small).
The school's enrollment decreased 19% from 2020-21 to 2024-25. Over the same period, the student-to-teacher ratio dropped to 17.7:1, from 23.5:1.
The allk12 page for Mariano Castro Elementary lets the school community talk about special education services, counseling, and support programs. Current and former families are welcome to add their experience.
Santa Clara County at a glance
View full county profilePopulation
1,902,047
Census ACS
Median income
$164,281
Household, ACS
Bachelor's+
57%
Adults 25+
Poverty rate
4%
Below federal line
Schools in county
412
230,059 students
Quick facts
Related schools
Other schools in Mountain View Whisman
- Isaac Newton Graham MiddleMiddle · 860 students
- Crittenden MiddleMiddle · 616 students
- Stevenson ElementaryElementary · 461 students
- Edith Landels ElementaryElementary · 399 students
- Amy Imai ElementaryElementary · 388 students
- Jose Antonio Vargas ElementaryElementary · 368 students
Other schools in Mountain View
- Mountain View HighHigh · 2,187 students
- Isaac Newton Graham MiddleMiddle · 860 students
- Crittenden MiddleMiddle · 616 students
- Stevenson ElementaryElementary · 461 students
- Edith Landels ElementaryElementary · 399 students
- Amy Imai ElementaryElementary · 388 students
Nearby schools
- Gabriela Mistral Elementary0.1 mi · 366
- Stevenson Elementary0.8 mi · 461
- Almond Elementary0.9 mi · 354
- Theuerkauf Elementary0.9 mi · 308
- Isaac Newton Graham Middle1.0 mi · 860
- Los Altos High1.0 mi · 2,170
Frequently asked questions
About Mariano Castro ElementaryHow large is Mariano Castro Elementary?
Mariano Castro Elementary enrolls approximately 248 students in grades KG-05.
Is Mariano Castro Elementary an elementary, middle, or high school?
Mariano Castro Elementary is an elementary school covering grades KG-05.
What is the student-teacher ratio at Mariano Castro Elementary?
The student-to-teacher ratio at Mariano Castro Elementary is approximately 17.7:1 (14 FTE teachers).
How diverse is Mariano Castro Elementary?
Mariano Castro Elementary reports a student body of 4% White, 91% Hispanic, 4% Asian, 0% Two or more.
Who oversees Mariano Castro Elementary?
Mariano Castro Elementary is overseen by Mountain View Whisman in Santa Clara County.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.