1
Enrollment
1,592
High
DISTRICT 780 · STATE 838
SCHOOL COMMUNITY·HACIENDA LA PUENTE UNIFIED·NCES 061632502053
Los Altos High
15325 East Los Robles Ave., Hacienda Heights, CA 91745 · (626) 934-5400 · Los Angeles County
GRADES 09–12HIGH21-SUBURBTITLE IREGULAR SCHOOL1,592 STUDENTS
B
allk12 Grade
Scored higher than 62% of California public high 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.
- 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 high schools
Student : Teacher
22.6:1
70 FTE teachers
DISTRICT 16.8:1 · STATE 18.2:1
Free / Reduced Lunch
70%
1,118 students
DISTRICT 74% · 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 | 447 | 28% |
| Grade 10 | 414 | 26% |
| Grade 11 | 372 | 23% |
| Grade 12 | 359 | 23% |
Student demographics
19%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 43% · 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
63.1%
CA avg 49.1% . +0.1pp since 2014
Math
31.7%
CA avg 37.7% . +7.7pp since 2014
What this means: On the CAASPP, California's statewide test, about 63 of every 100 students at this school read and write at grade level and about 32 of 100 do math at grade level. Across all California schools, those numbers are about 49 and 38. Reading and writing scores have held steady since 2014, while math scores are up about 8 points.
Performance levels, 2024-25
| Subject | Standard Exceeded | Standard Met | Standard Nearly Met | Standard Not Met |
|---|---|---|---|---|
| English Language Arts | 22.3% | 40.9% | 20.9% | 16.0% |
| Math | 11.1% | 20.6% | 23.4% | 44.9% |
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 | 63.1% | 31.7% |
| 2023-24 | 57.1% | 26.1% |
| 2022-23 | 62.7% | 17.8% |
| 2021-22 | 71.6% | 26.9% |
| 2018-19 | 59.1% | 23.2% |
| 2017-18 | 57.1% | 25.9% |
| 2016-17 | 64.1% | 25.2% |
| 2015-16 | 62.0% | 26.0% |
| 2014-15 | 63.0% | 24.0% |
% 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
44.5%
composite math + reading, all grades
Predicted
38.4%
based on CA schools with similar FRL share
Beats by
+6.1pp
above demographic expectation
What this means: About 45% of students here test proficient in math and reading, compared with the roughly 38% 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 Los Altos High
Los Altos High's state test result (44.5% proficient) is higher than 5 of the 5 schools below with a result.
| School | Students | Low-income | Proficient |
|---|---|---|---|
| Los Altos High this school | 1,592 | 70.2% | 44.5% |
| Rio Mesa High Oxnard | 1,951 | 72.6% | 32.0% |
| Pacheco High Los Banos | 1,725 | 71.1% | 37.3% |
| Brawley Union High Brawley | 1,863 | 70.7% | 44.0% |
| Southwest High El Centro | 1,846 | 72.1% | 36.9% |
| Central Union High El Centro | 2,006 | 72.6% | 38.2% |
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 Los Altos High ranks
Among high schools| Measure | This school | In California | In Los Angeles County |
|---|---|---|---|
| State test proficiency ranked highest first | 44.5% | #417 of 1,052 | #92 of 228 |
| Math proficiency ranked highest first | 31.7% | #399 of 1,056 ▲ 40 | #93 of 229 ▼ 4 |
| Reading proficiency ranked highest first | 63.1% | #396 of 1,056 ▲ 93 | #89 of 229 ▲ 17 |
| 3-year test score change ranked biggest drop first | -1.8pp | #260 of 1,044 | #26 of 229 |
| Enrollment ranked largest first | 1,592 | #516 of 2,093 | #100 of 486 |
| Students per teacher ranked fewest first | 22.6:1 | #953 of 1,352 | #276 of 358 |
| Diversity index ranked most diverse first | 19.0% | #1,110 of 1,351 | #235 of 359 |
| Free and reduced lunch ranked highest share first | 70.2% | #868 of 1,575 | #289 of 396 |
| Enrollment change since 2017-18 ranked steepest decline first | -10.4% | #445 of 802 | #155 of 227 |
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
1,592
-149 (-9%) vs 2020
-2% since 1990-91, when it was 1,621
Student : Teacher
22.6:1
was 24.9:1
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 | 1,592 | 70.3 | 22.6:1 | 70% (1,118) |
| 2023-24 | 1,574 | 67.9 | 23.2:1 | 76% (1,198) |
| 2022-23 | 1,557 | 68.5 | 22.7:1 | 69% (1,073) |
| 2020-21 | 1,741 | 70 | 24.9:1 | 73% (1,264) |
| 2017-18 | 1,776 | 71 | 25.0:1 | 66% (1,166) |
| 2015-16 | 2,025 | 80 | 25.3:1 | 67% (1,359) |
| 2010-11 | 2,064 | N/A | N/A | 57% (1,177) |
| 2000-01 | 1,711 | 74 | 23.1:1 | 25% (436) |
| 1990-91 | 1,621 | 67 | 24.2:1 | N/A |
Source: NCES Common Core of Data. Rows are the federal collections on file for Los Altos High.
Since 2017-18: students down 10% (1,776 to 1,592); teachers down 1% (71 to 70.3).
About Los Altos High
Los Altos High is a high-enrollment high school serving families in Hacienda Heights, California. The school runs grades 9 through 12 and enrolls 1,592 students. That compares with an average of about 838 students for high schools in California.
Enrollment across the 35 schools in Hacienda la Puente Unified totals 16,260 students.
At Los Altos High, 90% of students are Hispanic. Smaller groups are 6% Asian and 3% White. For comparison, the population of Los Angeles County is roughly 48% Hispanic. The diversity index for Los Altos High is 19%. For US public schools as a whole it is 70%.
Los Altos High has 70.3 full-time-equivalent teachers, for a student-to-teacher ratio of about 22.6:1. By comparison, the average for high schools in California is 18.2:1. A common income measure, free or reduced-price lunch eligibility, is 70% at Los Altos High. The figure for public schools in Los Angeles County is close, at 70%.
Among California public high schools, Los Altos High outscored 62%, which works out to a B on the allk12 Grade.
The school's average proficiency rate across its state test results is 44.5%. For its free or reduced-price lunch share, the predicted value is 38.4%.
American Community Survey estimates for Los Angeles County show that the median household earns about $90,112 a year, about 36% of adults have at least a bachelor's degree, and the poverty rate is about 10%. Across Los Angeles County, 2,244 public schools serve about 1,265,907 students.
Los Altos High's closest public school neighbor is Valley Community Day, about 0.3 miles away. The five-mile area around Los Altos High holds at least 8 other public schools. Local comparison: Los Altos High ranks 1st of 5 nearby schools, at 44.5% versus a 33.3% average.
The school's setting, by NCES definition, is Suburb: Large: in a suburban area outside a principal city, within an urbanized area with a population of 250,000 or more.
Enrollment decreased 9% over 4 years, reaching 1,592 in 2024-25. The student-to-teacher ratio dropped from 24.9:1 in 2020-21 to 22.6:1 in 2024-25.
The Los Altos High discussion page is a place for open houses, carpools, and field trips. You can also rate the school on this page.
Los Angeles County at a glance
View full county profilePopulation
9,808,667
Census ACS
Median income
$90,112
Household, ACS
Bachelor's+
36%
Adults 25+
Poverty rate
10%
Below federal line
Schools in county
2,244
1,265,907 students
Quick facts
Related schools
Other schools in Hacienda la Puente Unified
- Glen A. Wilson HighHigh · 1,456 students
- Mesa RoblesElementary · 1,246 students
- Cedarlane AcademyElementary · 878 students
- La Puente HighHigh · 813 students
- Fairgrove AcademyElementary · 749 students
- William Workman HighHigh · 723 students
Other schools in Hacienda Heights
- Glen A. Wilson HighHigh · 1,456 students
- Mesa RoblesElementary · 1,246 students
- Cedarlane AcademyElementary · 878 students
- Wedgeworth ElementaryElementary · 650 students
- Grazide ElementaryElementary · 606 students
- Newton MiddleMiddle · 565 students
Other Los Altos High schools
One other US public school is named Los Altos High. Los Altos High is the 2nd largest of the 2.
- Los Altos HighLos Altos, CA · 2,170 students
Nearby schools
- Valley Community Day0.3 mi · 13
- Valley Alternative High (Continuation)0.3 mi · 80
- Puente Hills High0.3 mi · 154
- Palm Canyon0.3 mi · 14
- Kwis Elementary0.5 mi · 305
- Los Robles Academy0.7 mi · 199
Frequently asked questions
About Los Altos HighHow many students attend Los Altos High?
Los Altos High enrolls approximately 1,592 students in grades 09-12.
Is Los Altos High an elementary, middle, or high school?
Los Altos High is a high school covering grades 09-12.
What is the student-teacher ratio at Los Altos High?
The student-to-teacher ratio at Los Altos High is approximately 22.6:1 (70 FTE teachers).
How diverse is Los Altos High?
Los Altos High reports a student body of 3% White, 90% Hispanic, 0% Black, 6% Asian, 1% Two or more.
Who oversees Los Altos High?
Los Altos High is overseen by Hacienda la Puente Unified in Los Angeles County.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.