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What's the most underrated thing about Arroyo High that outsiders don't know?
Community prompt from u/allk12. Replies below.
Enrollment
1,638
High
DISTRICT 1,040 · STATE 838
SCHOOL COMMUNITY·EL MONTE UNION HIGH·NCES 061212001363
Arroyo High
4921 North Cedar Ave., El Monte, CA 91732 · (626) 444-9201 · Los Angeles County
GRADES 09–12HIGH21-SUBURBTITLE IREGULAR SCHOOL1,638 STUDENTS
A-
allk12 Grade
Scored higher than 82% 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.
- ABeats 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
21.1:1
78 FTE teachers
DISTRICT 18.6:1 · STATE 18.2:1
Free / Reduced Lunch
84%
1,378 students
DISTRICT 93% · 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 | 420 | 26% |
| Grade 10 | 393 | 24% |
| Grade 11 | 402 | 25% |
| Grade 12 | 423 | 26% |
Student demographics
41%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 35% · 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
61.2%
CA avg 49.1% . -1.8pp since 2014
Math
40.2%
CA avg 37.7% . +14.2pp since 2014
What this means: On the CAASPP, California's statewide test, about 61 of every 100 students at this school read and write at grade level and about 40 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 2 points since 2014, while math scores are up about 14 points.
Performance levels, 2024-25
| Subject | Standard Exceeded | Standard Met | Standard Nearly Met | Standard Not Met |
|---|---|---|---|---|
| English Language Arts | 30.7% | 30.5% | 21.1% | 17.7% |
| Math | 22.3% | 17.9% | 20.5% | 39.4% |
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 | 61.2% | 40.2% |
| 2023-24 | 62.8% | 36.1% |
| 2022-23 | 70.9% | 38.1% |
| 2021-22 | 66.4% | 34.4% |
| 2018-19 | 67.8% | 43.3% |
| 2017-18 | 53.7% | 39.3% |
| 2016-17 | 62.8% | 38.5% |
| 2015-16 | 73.0% | 41.0% |
| 2014-15 | 63.0% | 26.0% |
% 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
OUTPERFORMING
Top 10% of CA schools after controlling for student poverty
Actual proficiency
50.1%
composite math + reading, all grades
Predicted
30.3%
based on CA schools with similar FRL share
Beats by
+19.8pp
above demographic expectation
What this means: About 50% of students here test proficient in math and reading, well above the roughly 30% typical for California schools with a similar share of low-income students. BeatsExpectations ranks schools against others at the same poverty level, not by raw scores, so a school can post high scores and still fall short of its prediction, or post lower scores and still beat it. This school clears its prediction by about 20 points, placing it in California's top 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 Arroyo High
Arroyo High's state test result (50.1% proficient) is higher than 4 of the 5 schools below with a result.
| School | Students | Low-income | Proficient |
|---|---|---|---|
| Arroyo High this school | 1,638 | 84.1% | 50.1% |
| West Covina High West Covina | 1,756 | 81.9% | 42.3% |
| Rancho Alamitos High Garden Grove | 1,439 | 86.6% | 48.4% |
| Magnolia High Anaheim | 1,608 | 90.7% | 37.4% |
| Abraham Lincoln Senior High Los Angeles | 913 | 89.4% | 56.2% |
| Sunnyside High Fresno | 2,858 | 87.2% | 29.7% |
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 Arroyo High ranks
Among high schools| Measure | This school | In California | In Los Angeles County |
|---|---|---|---|
| State test proficiency ranked highest first | 50.1% | #319 of 1,052 | #69 of 228 |
| Math proficiency ranked highest first | 40.2% | #269 of 1,056 ▲ 27 | #63 of 229 ▼ 2 |
| Reading proficiency ranked highest first | 61.2% | #446 of 1,056 ▼ 69 | #101 of 229 ▼ 18 |
| 3-year test score change ranked biggest gain first | +0.3pp | #635 of 1,044 | #180 of 229 |
| Enrollment ranked largest first | 1,638 | #486 of 2,093 | #95 of 486 |
| Students per teacher ranked fewest first | 21.1:1 | #704 of 1,352 | #228 of 358 |
| Diversity index ranked most diverse first | 41.3% | #815 of 1,351 | #144 of 359 |
| Free and reduced lunch ranked highest share first | 84.1% | #493 of 1,575 | #214 of 396 |
| Enrollment change since 2017-18 ranked steepest decline first | -24.2% | #110 of 802 | #50 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
1,638
-286 (-15%) vs 2020
-25% since 1990-91, when it was 2,174
Student : Teacher
21.1:1
was 25.0:1
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 | 1,638 | 77.6 | 21.1:1 | 84% (1,378) |
| 2023-24 | 1,698 | 74.5 | 22.8:1 | 85% (1,436) |
| 2022-23 | 1,742 | 81 | 21.5:1 | 81% (1,413) |
| 2020-21 | 1,924 | 77 | 25.0:1 | 85% (1,637) |
| 2017-18 | 2,161 | 94.7 | 22.8:1 | 84% (1,821) |
| 2015-16 | 2,228 | 96 | 23.2:1 | 86% (1,921) |
| 2010-11 | 2,302 | N/A | N/A | 80% (1,843) |
| 2000-01 | 2,208 | 86 | 25.7:1 | 51% (1,127) |
| 1990-91 | 2,174 | 83 | 26.2:1 | N/A |
Source: NCES Common Core of Data. Rows are the federal collections on file for Arroyo High.
Since 2017-18: students down 24% (2,161 to 1,638); teachers down 18% (94.7 to 77.6).
About Arroyo High
Arroyo High is a high school located in El Monte, California, in Los Angeles County. The student body numbers 1,638 students, from grades 9 through 12. An average school in this group (high schools in California) has about 838 students.
El Monte Union High has 7 schools and 7,278 students, and Arroyo High is one of those schools.
Hispanic students account for 72% of enrollment at Arroyo High. Smaller groups are 25% Asian. For comparison, the population of Los Angeles County is roughly 48% Hispanic. Arroyo High has a diversity index of 41%, compared with 70% for all US public school students.
Its teaching staff equals 77.6 full-time positions, a ratio of 21.1:1. That ratio is over the 18.2:1 average for high schools in California. Around 84% of the school's students qualify for free or reduced-price meals. That is 14 points above the 70% average for public schools in Los Angeles County.
The allk12 Grade for Arroyo High is A-. Compared with California public high schools, the school scored higher than 82% on a mix of test scores, poverty-adjusted results, and recent trend.
On BeatsExpectations, which compares test results with what a school's student poverty level would predict, Arroyo High ranks in the top 10% in California. Its average proficiency rate on state tests is 50.1%, against a prediction of 30.3%.
Census Bureau estimates for Los Angeles County show that median household income is about $90,112, 36% of adults hold a bachelor's degree or higher, and about 10% of residents live below the federal poverty line. A total of 2,244 public schools operate in Los Angeles County, serving about 1,265,907 students.
The closest other public school is El Monte Union High School Community Day, about 0.2 miles away. There are at least 8 other public schools within five miles. Arroyo High's average proficiency of 50.1% compares with 45.0% for its nearest scored neighbors.
Federal records code the school's setting as Suburb: Large.
The 2024-25 enrollment of 1,638 was 15% lower than in 2020-21, when it was 1,924. There were fewer students per teacher in 2024-25 (21.1:1) than in 2020-21 (25.0:1).
Parents and students can post about enrollment questions, class placement, and PTA news at Arroyo High. Questions from prospective families are welcome too.
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 El Monte Union High
- Rosemead HighHigh · 1,691 students
- El Monte HighHigh · 1,383 students
- South El Monte HighHigh · 1,125 students
- Mountain View HighHigh · 1,123 students
- Fernando R. Ledesma Continuation HighHigh · 293 students
- El Monte Union High School Community DayHigh · 25 students
Other schools in El Monte
- El Monte HighHigh · 1,383 students
- Mountain View HighHigh · 1,123 students
- Durfee ElementaryElementary · 1,120 students
- Parkview ElementaryElementary · 920 students
- Monte Vista ElementaryElementary · 785 students
- Columbia ElementaryElementary · 706 students
Other Arroyo High schools
One other US public school is named Arroyo High. Arroyo High is the largest of the 2.
- Arroyo HighSan Lorenzo, CA · 1,499 students
Nearby schools
- El Monte Union High School Community Day0.2 mi · 25
- Wright Elementary0.6 mi · 562
- Cleminson Elementary0.7 mi · 316
- Rio Hondo Elementary0.7 mi · 636
- Cherrylee Elementary0.8 mi · 292
- Legore Elementary1.0 mi · 516
Frequently asked questions
About Arroyo HighHow many students attend Arroyo High?
Arroyo High enrolls approximately 1,638 students in grades 09-12.
What grades does Arroyo High serve?
Arroyo High serves grades 09-12.
How many students per teacher at Arroyo High?
Approximately 21.1:1 students per teacher at Arroyo High.
What is the racial breakdown of students at Arroyo High?
At Arroyo High, the student body is approximately 2% White, 72% Hispanic, 0% Black, 25% Asian, 1% Two or more.
Is Arroyo High public or private?
Arroyo High is a public K-12 school, overseen by El Monte Union High.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.