Enrollment
330
California · 2024-25 NCES data
High school (grades 9-12) · Mammoth Lakes, CA
Mammoth High
Federal NCES profile for Mammoth High, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 33/100.
2024-25 NCES dataHigh school (grades 9-12)NCES 062353003568
👥 S:T ratio 30
📚 AP courses 25
🌟 Gifted program 30
🎓 Counselors 34
📋 Attendance 47
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Mammoth High earns 33/100 on the Resource Investment Index, with class sizes smaller than 82% of California schools.
- #3 of 5
- public schools in Mammoth Lakes · Resource Index
- 33
- Resource Index · Typical
- 17.4:1
- small classes for California
- 49.3%
- free-lunch eligible
Mammoth High has class sizes smaller than 82% of California schools. Computed live against every California school reporting to NCES.
By Resource Investment Index, Mammoth High ranks #3 of 5 public schools in Mammoth Lakes, CA.
School address
District: Mammoth Unified · California
NCES ID 062353003568 Verify on NCES CCD record →
Teachers (FTE)
19.0
Federal CCD staff survey
Students per teacher
17.4:1
vs 21.5:1 California avg
-19% vs state
Free-lunch eligible
49.3%
vs 55.5% California avg
-11% vs state
Student-teacher ratio in context
How Mammoth High compares with California and U.S. medians
What stands out at Mammoth High
Mammoth High is a mid-sized high school in Mammoth Lakes, California, enrolling 330 students.
Class sizes run a bit leaner than typical: 17.4:1 puts it in the smaller third of California schools by student-teacher ratio.
Economic need runs somewhat below the state's typical profile, with 49.3% of students eligible for free meals.
Enrollment of 330 puts it in the smaller third of California schools by headcount.
Its Resource Investment Index sits near the middle of the pack among 9,998 scored California schools.
Against 1,012 statewide peers matched on enrollment and economic need, it ranks in the upper tier at #276.
Its student body is led by Hispanic or Latino (65%) and White (31%) (diversity index 48/100).
On the academic-pipeline side it reports 5 Advanced Placement courses.
Counselor availability sits well past the ASCA benchmark, roughly 330 students sharing each counselor, though short of the most stretched campuses.
Attendance runs somewhat below the norm, with 21.2% of students chronically absent per the 2021-22 civil-rights collection.
Among Mammoth Lakes's high schools, it stands alongside Sierra High (Continuation) (9 students): Mammoth High is larger than that campus by headcount and runs heavier classes (17.4:1 vs 9:1).
Mammoth Unified also operates Mammoth Elementary (505 students) and Mammoth Middle (243 students) alongside Mammoth High.
Sourced from NCES CCD, CRDC, and F-33 (federal records, not a quality verdict). How we source and compute this.
Source: National Center for Education Statistics Common Core of Data + CRDC + F-33 · 2024-25
How Mammoth High compares
Mammoth High on the metrics families compare, against California and U.S. means.
| Metric | This school | vs California | California avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 17.4:1 | ▼ 19% | 21.5:1 | 15.7:1 |
| Free-lunch eligible | 49.3% | ▼ 11% | 55.5% | 51.7% |
| Enrollment | 330 | top 70% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
17.4:1
Leaner classes than 28% of US schools, heavier class loads than most.
330
Bigger than 37% of US schools by enrollment, mid-sized for the country.
Equity indicators (what these measure)
Economic need
49.3%
free-lunch eligible
- 11% below the California average of 55.5%
Above the 40% Title I schoolwide threshold; federal funds support the whole school, not individual students.
Staffing depth
17.4:1
students per teacher
- 19% below state mean
Top 18% in California - lower ratio than 82% of state schools
Between 16:1 and 20:1, squarely in the typical U.S. public-school staffing range.
Engagement
21.2%
chronically absent (missed 10%+ of school days)
At or above 20%, the commonly used threshold for "high" chronic absenteeism, signaling significant barriers to regular attendance.
Funding equity
$15,263
per pupil, district-wide
- below California avg of $16,509
Somewhat below the U.S. average per-pupil spend; funding constraints may affect programs, facilities, and staffing.
Support staff
Counselors1.0 FTE
Per 330 students, the combined health-and-guidance staffing load for this school.
Discipline context
0
in-school suspensions + 0 out-of-school
Suspension rate: 0.0 per 100 students. Combined in-school and out-of-school rate: 0.0 per 100 students. Reported via the Civil Rights Data Collection.
Overview
- Common Core of Data (June 2026): enrollment, staffing, and the student-teacher ratio above.
- Civil Rights Data Collection: discipline counts and program access (AP, gifted, special education).
- F-33 School District Finance Survey: the district-wide per-pupil spending figures below.
Three separate federal collections, each on its own reporting cadence - which is why this school's numbers line up on a consistent basis against every other school and state on this site, rather than mixing figures pulled from different survey years.
Student demographics
Hispanic or Latino 65.2%
White 30.6%
Asian 2.1%
Two or More 1.8%
Native Hawaiian / Pacific Islander 0.3%
Largest group: Hispanic or Latino at 65.2% of enrollment.
Student-body diversity index 48.0/100
Simpson diversity index - at 48.0, Mammoth High is more mixed than the California school average of 46.0.
Programs
AP courses offered 5
Funding & spending
District-wide per-pupil expenditure for Mammoth Unified, which includes Mammoth High.
$15,263
Per student
-8%
vs California
Avg $16,509
-8%
vs U.S.
Avg $16,593
Revenue mix
Local 82.4%
State 10.5%
Federal 7.1%
Source: NCES F-33 School District Finance Survey District-level finance · FY 2021-22 Per-pupil expenditure reflects the district-wide average. Individual school budgets are not reported at the federal level.
How Mammoth High Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Mammoth Elementary | Larger | Similar economic need | Higher S:T ratio |
| Mammoth Middle | Smaller | Similar economic need | Higher S:T ratio |
| Sierra High (Continuation) | Smaller | Higher economic need | Lower S:T ratio |
Comparisons are relative to Mammoth High's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 505
- Students per teacher
- 21:1
- Resource Index
- 15/100
- Enrollment
- 243
- Students per teacher
- 20.3:1
- Resource Index
- 31/100
- Enrollment
- 9
- Students per teacher
- 9:1
- Resource Index
- 64/100
Similar high schools in Mammoth Lakes
1 comparable high schools (grades 9-12) serving the same city.
Similar high schools statewide
Matched by enrollment size and by staffing ratio across all of California, not just this city - a different peer set than the local comparisons above.
Similar enrollment (~330 students)
Similar student-teacher ratio (~17.4:1)
Next steps
Verify locally before acting on Mammoth High's federal record.
- Compare Mammoth High against another school. Compare schools
- Mammoth Unified's spending and staffing shape this school. District profile
- Confirm current enrollment and boundaries with the school. Choosing guide
Federal record (CCD 2024-25, CRDC 2021-22) - PlainSchools assigns no subjective rating; the composite quality score is a transparent, reproducible index computed from this cited federal data.
Frequently asked questions about Mammoth High
How many students attend Mammoth High?
Mammoth High has 330 students enrolled. It is a high school in Mammoth Lakes, CA.
What is the student-teacher ratio at Mammoth High?
The student-teacher ratio at Mammoth High is 17.4:1, which is 19% lower than the California average of 21.5:1 and 11% higher than the national average of 15.7:1. Lower ratios generally mean more individual attention per student.
What percentage of students receive free lunch at Mammoth High?
49.3% of students at Mammoth High are eligible for free lunch, compared to the California average of 55.5%.
What is the racial and ethnic makeup of Mammoth High?
The largest demographic group at Mammoth High is Hispanic or Latino at 65.2% of enrollment, in Mammoth Lakes, CA.
What is the Resource Investment Index for Mammoth High?
Mammoth High has a Resource Investment Index of 33/100 (typical reported resources relative to schools nationally) based on 5 factors: student-teacher ratio, AP course offerings, counselor availability, attendance rates. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Mammoth High rank among public schools in Mammoth Lakes?
By Resource Investment Index, Mammoth High ranks #3 of 5 public schools in Mammoth Lakes, CA. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all public schools in Mammoth Lakes on the city page.
Is Mammoth High a good school?
Mammoth High earns 33/100 on the Resource Investment Index, with class sizes smaller than 82% of California schools. This is a resource snapshot, not an academic rating; see the Resource Investment Index question above for what the number does and doesn't measure.
What other schools are in Mammoth Unified?
Besides Mammoth High, Mammoth Unified also operates Mammoth Elementary (505 students), Mammoth Middle (243 students), and Sierra High (Continuation) (9 students). See the Mammoth Unified district page for the complete list.
Related tools
Every figure on PlainSchools is rendered directly from the source NCES, CRDC and F-33 federal records, no number is typed in by an editor. Each school's figures reflect its most recent NCES/CRDC submission on file. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of June 2026.