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What's something Hillsdale High does better than most schools?
Community prompt from u/allk12. Replies below.
Enrollment
1,585
High
DISTRICT 1,092 · STATE 838
SCHOOL COMMUNITY·SAN MATEO UNION HIGH·NCES 063498005923
Hillsdale High
3115 Del Monte St., San Mateo, CA 94403 · (650) 558-2699 · San Mateo County
GRADES 09–12HIGH12-CITYREGULAR SCHOOL1,585 STUDENTS
B-
allk12 Grade
Scored higher than 46% of California public high schools
- B+Test scores Share of students meeting the state standard in reading, math, and other tested subjects, 2023-24 and 2024-25.
- C-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 high schools
Student : Teacher
19.4:1
82 FTE teachers
DISTRICT 18.0:1 · STATE 18.2:1
Free / Reduced Lunch
25%
400 students
DISTRICT 35% · STATE 65%
Community
6
0 members
Enrollment and student:teacher ratio compared against other high schools. Free/Reduced Lunch and demographics compared against all schools.
Enrollment by grade, 2024-25
| Grade | Students | Share |
|---|---|---|
| Grade 9 | 372 | 23% |
| Grade 10 | 393 | 25% |
| Grade 11 | 409 | 26% |
| Grade 12 | 411 | 26% |
Student demographics
71%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
72.0%
CA avg 49.1% . +10.0pp since 2014
Math
41.9%
CA avg 37.7% . -4.1pp since 2014
What this means: On the CAASPP, California's statewide test, about 72 of every 100 students at this school read and write at grade level and about 42 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 10 points since 2014, while math scores are down about 4 points.
Performance levels, 2024-25
| Subject | Standard Exceeded | Standard Met | Standard Nearly Met | Standard Not Met |
|---|---|---|---|---|
| English Language Arts | 39.8% | 32.2% | 14.7% | 13.3% |
| Math | 25.4% | 16.5% | 21.5% | 36.6% |
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 | 72.0% | 41.9% |
| 2023-24 | 65.0% | 37.2% |
| 2022-23 | 67.3% | 39.6% |
| 2021-22 | 71.3% | 44.2% |
| 2018-19 | 71.0% | 49.5% |
| 2017-18 | 73.8% | 51.0% |
| 2016-17 | 73.8% | 57.5% |
| 2015-16 | 78.0% | 54.0% |
| 2014-15 | 62.0% | 46.0% |
% 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
54.0%
composite math + reading, all grades
Predicted
64.8%
based on CA schools with similar FRL share
Beats by
-10.7pp
below demographic expectation
What this means: About 54% of students here test proficient in math and reading, compared with the roughly 65% 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 Hillsdale High
Hillsdale High's state test result (54.0% proficient) is higher than 2 of the 5 schools below with a result.
| School | Students | Low-income | Proficient |
|---|---|---|---|
| Hillsdale High this school | 1,585 | 25.2% | 54.0% |
| Ann Sobrato High Morgan Hill | 1,511 | 30.3% | 53.5% |
| Livermore High Livermore | 1,827 | 23.5% | 47.0% |
| Pioneer High San Jose | 1,393 | 30.8% | 58.9% |
| Branham High San Jose | 1,820 | 31.4% | 66.4% |
| Glendora High Glendora | 2,069 | 21.2% | 60.5% |
Matched among California high 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 Hillsdale High ranks
Among high schools| Measure | This school | In California | In San Mateo County |
|---|---|---|---|
| State test proficiency ranked highest first | 54.0% | #265 of 1,052 | #8 of 17 |
| Math proficiency ranked highest first | 41.9% | #246 of 1,056 ▲ 42 | #7 of 17 ▲ 4 |
| Reading proficiency ranked highest first | 72.0% | #211 of 1,056 ▲ 126 | #6 of 17 ▲ 4 |
| 3-year test score change ranked biggest drop first | -0.8pp | #339 of 1,044 | #14 of 17 |
| Enrollment ranked largest first | 1,585 | #522 of 2,093 | #6 of 35 |
| Students per teacher ranked fewest first | 19.4:1 | #453 of 1,352 | #12 of 23 |
| Diversity index ranked most diverse first | 71.4% | #80 of 1,351 | #4 of 23 |
| Free and reduced lunch ranked highest share first | 25.2% | #1,439 of 1,575 | #20 of 28 |
| Enrollment change since 2017-18 ranked fastest growth first | +3.3% | #237 of 327 | N/A |
Ranked against other public high 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
1,585
-104 (-6%) vs 2020
+21% since 1990-91, when it was 1,310
Student : Teacher
19.4:1
was 19.0:1
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 | 1,585 | 81.9 | 19.4:1 | 25% (400) |
| 2023-24 | 1,581 | 86.5 | 18.3:1 | 19% (295) |
| 2022-23 | 1,629 | 92.7 | 17.6:1 | 19% (310) |
| 2020-21 | 1,689 | 89 | 19.0:1 | 20% (342) |
| 2017-18 | 1,534 | 79.1 | 19.4:1 | 20% (306) |
| 2015-16 | 1,375 | 72 | 19.1:1 | 12% (163) |
| 2010-11 | 1,321 | N/A | N/A | 17% (231) |
| 2000-01 | 1,130 | 57 | 19.8:1 | 4% (40) |
| 1990-91 | 1,310 | 54 | 24.3:1 | N/A |
Source: NCES Common Core of Data. Rows are the federal collections on file for Hillsdale High.
Since 2017-18: students up 3% (1,534 to 1,585); teachers up 4% (79.1 to 81.9).
About Hillsdale High
Hillsdale High serves students in San Mateo, California, as a large high school. Students in grades 9 through 12 make up the school's enrollment of 1,585 students. By comparison, high schools in California enroll about 838 students on average.
The San Mateo Union High system has 8 schools and 8,736 students.
The biggest share of students at Hillsdale High, 38%, is Hispanic. Next come 31% White, 20% Asian, and 9% multiracial. That compares with about 25% Hispanic among all San Mateo County residents. A diversity index of 71% means there is a 71% chance two randomly chosen students at Hillsdale High are from different groups.
The school's 81.9 full-time-equivalent teachers translate to a student-to-teacher ratio of 19.4:1. High schools in California have an average ratio of 18.2:1. At Hillsdale High, 25% of students qualify for free or reduced-price lunch in 2024-25. That is lower than the 34% average for public schools in San Mateo County.
Hillsdale High earns a B- on the allk12 Grade, which blends test scores, results against poverty-based expectations, and the three-year trend. It scored higher than 46% of California public high schools.
Hillsdale High's actual average proficiency rate across its state test results (54.0%) and its predicted rate (64.8%) put it outside the top and bottom 10% of California schools.
In the surrounding county, San Mateo County, the median household earns about $158,855 a year, the share of adults with a bachelor's degree or higher is 54%, and about 4% of people live in poverty. Counting Hillsdale High, San Mateo County has 176 public schools.
About 0.2 miles separate Hillsdale High from the closest public school, Abbott Middle. Other public schools within five miles: at least 8. Hillsdale High is 4th of 9 nearby schools by average proficiency rate.
By NCES locale, the school is City: Mid-size, or inside a principal city with a population between 100,000 and 250,000.
The school shrank from 1,689 students in 2020-21 to 1,585 in 2024-25.
The allk12 page for Hillsdale High lets the school community talk about pickup and drop-off, after-school programs, and teacher feedback. You can also rate the school on this page.
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 Mateo Union High
- Aragon HighHigh · 1,658 students
- Burlingame HighHigh · 1,583 students
- San Mateo HighHigh · 1,557 students
- Mills HighHigh · 1,115 students
- Capuchino HighHigh · 1,061 students
- Peninsula High (Continuation)High · 123 students
Other schools in San Mateo
- Aragon HighHigh · 1,658 students
- San Mateo HighHigh · 1,557 students
- Borel MiddleMiddle · 903 students
- Bayside AcademyElementary · 840 students
- Abbott MiddleMiddle · 721 students
- Baywood ElementaryElementary · 489 students
Other Hillsdale High schools
One other US public school is named Hillsdale High. Hillsdale High is the largest of the 2.
- Hillsdale High SchoolHILLSDALE, MI · 370 students
Nearby schools
- Abbott Middle0.2 mi · 721
- Laurel Elementary0.5 mi · 469
- Beresford Elementary0.5 mi · 218
- Meadow Heights Elementary0.5 mi · 238
- Cipriani Elementary1.2 mi · 471
- George Hall Elementary1.2 mi · 370
Frequently asked questions
About Hillsdale HighHow many students attend Hillsdale High?
Hillsdale High enrolls approximately 1,585 students in grades 09-12.
Is Hillsdale High an elementary, middle, or high school?
Hillsdale High is a high school covering grades 09-12.
How many teachers does Hillsdale High have?
Hillsdale High employs 82 FTE teachers, for a student-to-teacher ratio of 19.4:1.
What is the student diversity at Hillsdale High?
Student demographics at Hillsdale High are roughly 31% White, 38% Hispanic, 1% Black, 20% Asian, 9% Two or more.
What district is Hillsdale High in?
Hillsdale High is part of San Mateo Union High.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.