1
Enrollment
1,017
Middle
DISTRICT 1,020 · STATE 659
SCHOOL COMMUNITY·WILLIAM S. HART UNION HIGH·NCES 064251003268
La Mesa Junior High
26623 May Way, Santa Clarita, CA 91351 · (661) 250-0022 · Los Angeles County
GRADES 07–08MIDDLE21-SUBURBTITLE IREGULAR SCHOOL1,017 STUDENTS
B+
allk12 Grade
Scored higher than 66% of California public middle 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.
- AThree-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 middle schools
Student : Teacher
20.2:1
50 FTE teachers
DISTRICT 22.3:1 · STATE 20.7:1
Free / Reduced Lunch
48%
486 students
DISTRICT 31% · STATE 65%
Community
6
0 members
Enrollment and student:teacher ratio compared against other middle schools. Free/Reduced Lunch and demographics compared against all schools.
Enrollment by grade, 2024-25
| Grade | Students | Share |
|---|---|---|
| Grade 7 | 471 | 46% |
| Grade 8 | 546 | 54% |
Student demographics
62%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 67% · 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
59.3%
CA avg 49.1% . +16.3pp since 2014
Math
42.9%
CA avg 37.7% . +7.9pp since 2014
What this means: On the CAASPP, California's statewide test, about 59 of every 100 students at this school read and write at grade level and about 43 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 16 points 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 | 21.6% | 37.7% | 21.8% | 18.9% |
| Math | 20.2% | 22.6% | 29.4% | 27.7% |
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 | 59.3% | 42.9% |
| 2023-24 | 49.3% | 34.5% |
| 2022-23 | 52.3% | 31.9% |
| 2021-22 | 55.3% | 31.1% |
| 2018-19 | 55.0% | 43.5% |
| 2017-18 | 54.5% | 47.5% |
| 2016-17 | 52.7% | 45.6% |
| 2015-16 | 51.0% | 44.0% |
| 2014-15 | 43.0% | 35.0% |
% 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
46.5%
composite math + reading, all grades
Predicted
51.5%
based on CA schools with similar FRL share
Beats by
-5.0pp
below demographic expectation
What this means: About 47% of students here test proficient in math and reading, compared with the roughly 52% 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 La Mesa Junior High
La Mesa Junior High's state test result (46.5% proficient) is higher than 0 of the 5 schools below with a result.
| School | Students | Low-income | Proficient |
|---|---|---|---|
| La Mesa Junior High this school | 1,017 | 47.8% | 46.5% |
| Marshall Academy of the Arts Long Beach | 940 | 45.0% | 54.6% |
| Kastner Intermediate Fresno | 1,155 | 52.4% | 57.0% |
| Bancroft Middle Long Beach | 806 | 49.1% | 47.0% |
| Hillview Middle Palmdale | 1,100 | 53.0% | 51.1% |
| Vineyard Junior High Alta Loma | 933 | 41.3% | 59.2% |
Matched among California middle 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 La Mesa Junior High ranks
Among middle schools| Measure | This school | In California | In Los Angeles County |
|---|---|---|---|
| State test proficiency ranked highest first | 46.5% | #398 of 1,224 | #88 of 248 |
| Math proficiency ranked highest first | 42.9% | #362 of 1,227 ▲ 102 | #80 of 248 ▲ 22 |
| Reading proficiency ranked highest first | 59.3% | #336 of 1,227 ▲ 124 | #73 of 248 ▲ 28 |
| 3-year test score change ranked biggest gain first | +7.9pp | #157 of 1,214 | #53 of 247 |
| Enrollment ranked largest first | 1,017 | #176 of 1,377 | #52 of 317 |
| Students per teacher ranked fewest first | 20.2:1 | #500 of 1,279 | #115 of 301 |
| Diversity index ranked most diverse first | 62.1% | #382 of 1,278 | #52 of 301 |
| Free and reduced lunch ranked highest share first | 47.8% | #956 of 1,329 | #258 of 312 |
| Enrollment change since 2017-18 ranked steepest decline first | -14.4% | #524 of 930 | #137 of 213 |
Ranked against other public middle 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
1,017
-31 (-3%) vs 2020
-31% since 2000-01, when it was 1,468
Student : Teacher
20.2:1
was 20.6:1
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 | 1,017 | 50.3 | 20.2:1 | 48% (486) |
| 2023-24 | 1,023 | 54.4 | 18.8:1 | 33% (337) |
| 2022-23 | 1,014 | 54.1 | 18.8:1 | 39% (399) |
| 2020-21 | 1,048 | 51 | 20.6:1 | 53% (553) |
| 2017-18 | 1,188 | 56.3 | 21.1:1 | 49% (583) |
| 2015-16 | 1,091 | 45 | 24.2:1 | 42% (457) |
| 2010-11 | 1,195 | N/A | N/A | 33% (395) |
| 2000-01 | 1,468 | 62 | 23.7:1 | 5% (67) |
Source: NCES Common Core of Data. Rows are the federal collections on file for La Mesa Junior High.
Since 2017-18: students down 14% (1,188 to 1,017); teachers down 11% (56.3 to 50.3).
About La Mesa Junior High
La Mesa Junior High is a middle school in Santa Clarita, California, reachable at (661) 250-0022. A federal count lists 1,017 students at the school, in grades 7 through 8. Average enrollment for middle schools in California is about 659, so this school runs 54% bigger than that.
William S. Hart Union High enrolls 20,465 students, and its 16 schools include La Mesa Junior High.
La Mesa Junior High's enrollment is 57% Hispanic. The remaining shares are 18% White, 13% Asian, 8% Black, and 4% multiracial. Census estimates put the Hispanic share of Los Angeles County's population at about 48%. La Mesa Junior High has a diversity index of 62%, compared with 70% for all US public school students.
Staffing totals 50.3 full-time-equivalent teachers, and the student-to-teacher ratio is 20.2:1. Across middle schools in California, the average ratio is about 20.7:1. A measure often used for student poverty, free or reduced-price lunch eligibility, stands at 48%. That is 22 points below the 70% average for public schools in Los Angeles County.
allk12 grades La Mesa Junior High a B+. The grade compares the school only with California public middle schools, because each state gives its own test.
A school with La Mesa Junior High's lunch-eligibility share in California is predicted to score 51.5%. La Mesa Junior High scores 46.5%, 5.0 points below that line.
La Mesa Junior High is located in Los Angeles County, where median household income is about $90,112, 36% of adults hold a bachelor's degree or higher, and about 10% of people live in poverty. Federal data list 2,244 public schools in Los Angeles County, with a combined enrollment of about 1,265,907.
The next-closest public school is Golden Valley High, about 0.8 miles away. There are at least 8 more public schools inside five miles. La Mesa Junior High's average proficiency of 46.5% compares with 46.6% for its nearest scored neighbors.
By NCES locale, the school is Suburb: Large, or in a suburban area outside a principal city, within an urbanized area with a population of 250,000 or more.
Enrollment was 1,048 in 2020-21 and 1,017 in 2024-25, a decrease of 31 students.
Community posts for La Mesa Junior High can cover science fairs, picture day, and bus routes. 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 William S. Hart Union High
- Saugus HighHigh · 2,317 students
- Valencia HighHigh · 2,286 students
- Golden Valley HighHigh · 1,980 students
- Canyon HighHigh · 1,952 students
- William S. Hart HighHigh · 1,941 students
- West Ranch HighHigh · 1,777 students
Other schools in Santa Clarita
- Golden Valley HighHigh · 1,980 students
- Rio Norte Junior HighMiddle · 1,138 students
- Fair Oaks Ranch CommunityElementary · 866 students
- Golden Oak CommunityElementary · 533 students
- Academy of the CanyonsHigh · 385 students
- Learning Post Academy (Alternative)High · 322 students
Nearby schools
- Golden Valley High0.8 mi · 1,980
- Valley View Community Elementary0.9 mi · 526
- Sierra Vista Junior High0.9 mi · 946
- Canyon Springs Community Elementary1.2 mi · 496
- Cedarcreek Elementary1.3 mi · 380
- Rio Vista Elementary1.4 mi · 486
Frequently asked questions
About La Mesa Junior HighHow many students attend La Mesa Junior High?
La Mesa Junior High enrolls approximately 1,017 students in grades 07-08.
What age range does La Mesa Junior High serve?
La Mesa Junior High serves students from grade 07 through grade 08.
How many students per teacher at La Mesa Junior High?
Approximately 20.2:1 students per teacher at La Mesa Junior High.
How diverse is La Mesa Junior High?
La Mesa Junior High reports a student body of 18% White, 57% Hispanic, 8% Black, 13% Asian, 4% Two or more.
Who oversees La Mesa Junior High?
La Mesa Junior High is overseen by William S. Hart Union High in Los Angeles County.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.