1
What's the one class at Mountain House High every student should take?
Community prompt from u/allk12. Replies below.
Enrollment
2,428
High
DISTRICT 883 · STATE 838
SCHOOL COMMUNITY·LAMMERSVILLE JOINT UNIFIED·NCES 060141013692
Mountain House High
1090 South Central Pkwy., Mountain House, CA 95391 · (209) 836-7460 · San Joaquin County
GRADES 09–12HIGH22-SUBURBREGULAR SCHOOL2,428 STUDENTS
A-
allk12 Grade
Scored higher than 80% of California public high schools
- ATest 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.
- A-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
25.2:1
96 FTE teachers
DISTRICT 22.9:1 · STATE 18.2:1
Free / Reduced Lunch
11%
262 students
DISTRICT 13% · 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 | 646 | 27% |
| Grade 10 | 598 | 25% |
| Grade 11 | 604 | 25% |
| Grade 12 | 580 | 24% |
Student demographics
58%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 56% · 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
School pathway
Feeds from
Based on grade levels within Lammersville Joint Unified. Attendance zones can vary; confirm enrollment with the district.
Test scores
CAASPP 2024-25 . % met or exceeded standardEnglish Language Arts
80.8%
CA avg 49.1% . +4.8pp since 2015
Math
66.5%
CA avg 37.7% . +29.5pp since 2015
What this means: On the CAASPP, California's statewide test, about 81 of every 100 students at this school read and write at grade level and about 67 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 5 points since 2015, while math scores are up about 30 points.
Performance levels, 2024-25
| Subject | Standard Exceeded | Standard Met | Standard Nearly Met | Standard Not Met |
|---|---|---|---|---|
| English Language Arts | 53.9% | 26.9% | 11.8% | 7.4% |
| Math | 41.1% | 25.4% | 16.2% | 17.3% |
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 | 80.8% | 66.5% |
| 2023-24 | 74.0% | 60.1% |
| 2022-23 | 78.5% | 62.1% |
| 2021-22 | 76.4% | 56.5% |
| 2020-21 | 74.9% | 60.3% |
| 2018-19 | 75.2% | 50.3% |
| 2017-18 | 78.9% | 49.3% |
| 2016-17 | 79.2% | 42.0% |
| 2015-16 | 76.0% | 37.0% |
% 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
70.4%
composite math + reading, all grades
Predicted
73.2%
based on CA schools with similar FRL share
Beats by
-2.8pp
below demographic expectation
What this means: About 70% 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 Mountain House High
Mountain House High's state test result (70.4% proficient) is higher than 0 of the 5 schools below with a result.
| School | Students | Low-income | Proficient |
|---|---|---|---|
| Mountain House High this school | 2,428 | 10.8% | 70.4% |
| Dublin High Dublin | 2,771 | 16.9% | 73.9% |
| Portola High Irvine | 2,693 | 17.6% | 71.9% |
| Northwood High Irvine | 2,244 | 18.8% | 72.3% |
| Foothill High Pleasanton | 2,169 | 8.9% | 75.0% |
| Cupertino High Cupertino | 1,800 | 10.2% | 83.3% |
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 Mountain House High ranks
Among high schools| Measure | This school | In California | In San Joaquin County |
|---|---|---|---|
| State test proficiency ranked highest first | 70.4% | #77 of 1,052 | #3 of 26 |
| Math proficiency ranked highest first | 66.5% | #55 of 1,056 ▲ 20 | #2 of 26 no change |
| Reading proficiency ranked highest first | 80.8% | #90 of 1,056 ▲ 78 | #4 of 26 no change |
| 3-year test score change ranked biggest gain first | +7.2pp | #257 of 1,044 | #5 of 26 |
| Enrollment ranked largest first | 2,428 | #117 of 2,093 | #2 of 46 |
| Students per teacher ranked fewest first | 25.2:1 | #1,230 of 1,352 | #28 of 32 |
| Diversity index ranked most diverse first | 57.6% | #470 of 1,351 | #18 of 32 |
| Free and reduced lunch ranked highest share first | 10.8% | #1,547 of 1,575 | #41 of 41 |
| Enrollment change since 2017-18 ranked fastest growth first | +101.0% | #9 of 327 | #1 of 10 |
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
2,428
+719 (+42%) vs 2020
Student : Teacher
25.2:1
was 23.4:1
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 | 2,428 | 96.5 | 25.2:1 | 11% (262) |
| 2023-24 | 2,275 | 96.9 | 23.5:1 | 13% (291) |
| 2022-23 | 2,142 | 90.1 | 23.8:1 | 13% (282) |
| 2020-21 | 1,709 | 73 | 23.4:1 | 15% (252) |
| 2017-18 | 1,208 | 62.1 | 19.4:1 | 22% (265) |
| 2015-16 | 823 | 32 | 25.7:1 | 16% (132) |
Source: NCES Common Core of Data. Rows are the federal collections on file for Mountain House High.
Since 2017-18: students up 101% (1,208 to 2,428); teachers up 55% (62.1 to 96.5).
About Mountain House High
Mountain House High is a large high school in California, with an address in Mountain House. The school enrolls 2,428 students in grades 9 through 12. On average, high schools in California enroll around 838, and this school is 190% above that mark.
Mountain House High is among 9 schools run by Lammersville Joint Unified, which serves 7,945 students.
More than half of enrollment at Mountain House High is Asian: 62%. Other groups make up 13% White, 12% Hispanic, 6% multiracial, and 5% Black. San Joaquin County as a whole is about 19% Asian, so the school's share is higher. Measured by the diversity index, the student body scores 58%.
Its staff includes 96.5 full-time-equivalent teachers, for about 25.2 students per teacher. The gap from the 18.2:1 average for high schools in California is 7.0 students per teacher. Roughly 11% of students at Mountain House High can receive free or reduced-price lunch. Among public schools in San Joaquin County, the average eligibility rate is 66%.
On the allk12 Grade, Mountain House High lands at A-, ahead of 80% of California public high schools.
Mountain House High is 2.8 points below its predicted average proficiency rate across its state test results (70.4% versus 73.2%), which places it in neither the top nor the bottom 10% in California.
For the population of San Joaquin County, median household income comes to about $92,179, 23% of adults hold a bachelor's degree or higher, and about 10% of people live in poverty. San Joaquin County's 251 public schools enroll about 153,026 students and include Mountain House High.
Mountain House High's closest public school neighbor is Julius Cordes Elementary, about 0.4 miles away. Counting only straight-line distance, at least 8 other public schools are within five miles. Its average proficiency rate of 70.4% is above the 70.0% average for nearby schools.
Locale data from NCES put Mountain House High in a suburban area outside a principal city, within an urbanized area with a population between 100,000 and 250,000 (Suburb: Mid-size).
Federal data put enrollment at 1,709 in 2020-21 and 2,428 in 2024-25; the school may have served different grades in those years. The student-to-teacher ratio went up from 23.4:1 to 25.2:1.
This community page is for conversations about fundraisers, report cards, and school supplies. Teachers and staff are welcome to share updates too.
San Joaquin County at a glance
View full county profilePopulation
797,334
Census ACS
Median income
$92,179
Household, ACS
Bachelor's+
23%
Adults 25+
Poverty rate
10%
Below federal line
Schools in county
251
153,026 students
Quick facts
Related schools
Other schools in Lammersville Joint Unified
- Hansen ElementaryElementary · 930 students
- Julius Cordes ElementaryElementary · 877 students
- Sebastian Questa ElementaryElementary · 822 students
- Bethany ElementaryElementary · 768 students
- Wicklund ElementaryElementary · 689 students
- Altamont ElementaryElementary · 616 students
Other schools in Mountain House
- Hansen ElementaryElementary · 930 students
- Julius Cordes ElementaryElementary · 877 students
- Sebastian Questa ElementaryElementary · 822 students
- Bethany ElementaryElementary · 768 students
- Wicklund ElementaryElementary · 689 students
- Altamont ElementaryElementary · 616 students
Nearby schools
- Julius Cordes Elementary0.4 mi · 877
- Hansen Elementary0.5 mi · 930
- Wicklund Elementary0.6 mi · 689
- Bethany Elementary0.6 mi · 768
- Evelyn Costa Elementary0.7 mi · 612
- Altamont Elementary1.2 mi · 616
Frequently asked questions
About Mountain House HighHow many students attend Mountain House High?
Mountain House High enrolls approximately 2,428 students in grades 09-12.
What grades does Mountain House High serve?
Mountain House High serves grades 09-12.
What is the student-teacher ratio at Mountain House High?
The student-to-teacher ratio at Mountain House High is approximately 25.2:1 (96 FTE teachers).
What is the racial breakdown of students at Mountain House High?
At Mountain House High, the student body is approximately 13% White, 12% Hispanic, 5% Black, 62% Asian, 6% Two or more.
What district is Mountain House High in?
Mountain House High is part of Lammersville Joint Unified.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.