- Enrollment
- 1,911
- Students per teacher
- 26.2:1
- Resource Index
- 42/100
High school (grades 9-12) · San Dimas, CA
San Dimas High
Federal NCES profile for San Dimas High, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 44/100.
2024-25 NCES dataHigh school (grades 9-12)NCES 060561000514
👥 S:T ratio 18
🌟 Gifted program 70
🎓 Counselors 55
📋 Attendance 35
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
San Dimas High earns 44/100 on the Resource Investment Index, with class sizes near the California median.
- #2 of 3
- high schools in San Dimas · Resource Index
- 44
- Resource Index · Typical
- 20.6:1
- students per teacher
- 31.8%
- free-lunch eligible
San Dimas High has class sizes near the California median. Computed live against every California school reporting to NCES.
By Resource Investment Index, San Dimas High ranks #2 of 3 high schools in San Dimas, CA.
School address
District: Bonita Unified · California
NCES ID 060561000514 Verify on NCES CCD record →
CCD year-over-year · 2022-23 → 2023-24
-3 students YoY
San Dimas High held near 1,248 students from 2022-23 to 2023-24 (-3 headcount).
Teacher FTE lost 60.5 → 59.6 across the same CCD years.
Source: NCES Common Core of Data public-school universe (2022-23, 2023-24).
Steady CCD campus
-3 students YoY 060561000514 · San Dimas, CA High · MID · TRAD
1,235 enr · 20.6:1 · 31.8% lunch · RII 44
Nearest enrollment peer: Bonita High (1,911 students)
San Dimas High held near 1,248 students from 2022-23 to 2023-24 (-3 headcount). Teacher FTE lost 60.5 → 59.6 across the same CCD years. Read with this school → · District book → · California schools → · Find another →
San Dimas High in the enrollment neighbourhood
Fall enrollment among this campus and nearest district peers
- Bonita High
Bonita High
1,911 students
- Ramona Middle
Ramona Middle
1,371 students
- This school
San Dimas High
1,235 students
- Lone Hill Midd
Lone Hill Middle
870 students
- J. Marion Royn
J. Marion Roynon Elementary
842 students
- Arma J. Shull 633
Arma J. Shull Elementary
633 students
What this shows San Dimas High reports 1,235 students on the CCD universe file.
How San Dimas High compares
San Dimas High held steady on CCD headcount: ratios and free-lunch share vs California and U.S. means.
| Metric | This school | vs California | California avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 20.6:1 | ▼ 4% | 21.5:1 | 15.7:1 |
| Free-lunch eligible | 31.8% | ▼ 43% | 55.5% | 51.7% |
| Enrollment | 1,235 | top 8% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
20.6:1
Leaner classes than 14% of US schools, heavier class loads than most.
1,235
Bigger than 94% of US schools by enrollment, a large campus nationally.
Equity indicators methodology
Economic need
31.8%
free-lunch eligible
- 43% below the California average of 55.5%
Below the 40% Title I threshold; federal aid targets individual qualifying students rather than schoolwide programs.
Staffing depth
20.6:1
students per teacher
- 4% below state mean
Top 40% in California - lower ratio than 60% of state schools
Above 20:1, running heavier than the typical U.S. public school; staffing is comparatively stretched.
Engagement
25.9%
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
$14,509
per pupil, district-wide
- below California avg of $18,665
Somewhat below the U.S. average per-pupil spend; funding constraints may affect programs, facilities, and staffing.
Support staff
Counselors5.5 FTE
Per 225 students, the combined health-and-guidance staffing load for this school.
Discipline context
1
in-school suspensions + 68 out-of-school
Suspension rate: 0.1 per 100 students. Combined in-school and out-of-school rate: 5.6 per 100 students. Reported via the Civil Rights Data Collection. Includes 5 expulsions.
Student demographics
Hispanic or Latino 59.6%
White 17.8%
Asian 10.7%
Two or More 8.9%
African American 3.0%
Largest group: Hispanic or Latino at 59.6% of enrollment.
Student-body diversity index 59.3/100
Simpson diversity index - at 59.3, San Dimas High is more mixed than the California school average of 46.0.
Programs
AP courses offered 17
Gifted & talented Yes
District finance for Bonita Unified reports $14,509 per pupil (NCES F-33) - open the district page for the full revenue mix.
How San Dimas High Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Bonita High | Larger | Similar economic need | Higher S:T ratio |
| Ramona Middle | Similar size | Similar economic need | Higher S:T ratio |
| Lone Hill Middle | Smaller | Similar economic need | Higher S:T ratio |
| J. Marion Roynon Elementary | Smaller | Similar economic need | Higher S:T ratio |
| Arma J. Shull Elementary | Smaller | Similar economic need | Higher S:T ratio |
Comparisons are relative to San Dimas High's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 1,371
- Students per teacher
- 26.9:1
- Resource Index
- 41/100
- Enrollment
- 870
- Students per teacher
- 24.2:1
- Resource Index
- 44/100
- Enrollment
- 842
- Students per teacher
- 24.8:1
- Resource Index
- 28/100
- Enrollment
- 633
- Students per teacher
- 27.5:1
- Resource Index
- 30/100
Similar high schools in San Dimas
2 comparable high schools (grades 9-12) serving the same city.
Nationwide high schools with similar size or staffing
Out-of-state peers matched by enrollment and by student-teacher ratio, not the same-city or same-district lists above.
Similar enrollment (~1,235 students)
Frequently asked questions about San Dimas High
How many students attend San Dimas High?
San Dimas High has 1,235 students enrolled. It is a high school in San Dimas, CA. CCD year-over-year: 1,251 (2022-23) → 1,248 (2023-24), nearly flat (-3).
What is the student-teacher ratio at San Dimas High?
The student-teacher ratio at San Dimas High is 20.6:1, which is 4% lower than the California average of 21.5:1 and 31% 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 San Dimas High?
31.8% of students at San Dimas High are eligible for free lunch, compared to the California average of 55.5%.
What is the racial and ethnic makeup of San Dimas High?
The largest demographic group at San Dimas High is Hispanic or Latino at 59.6% of enrollment, in San Dimas, CA. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 59.3/100.
What is the Resource Investment Index for San Dimas High?
San Dimas High has a Resource Investment Index of 44/100 (typical reported resources relative to schools nationally) based on 4 factors: student-teacher ratio, gifted-program reporting, counselor availability, chronic absenteeism. Not a test-score or academic measure (national median ~41/100, see methodology).
How does San Dimas High rank among high schools in San Dimas?
By Resource Investment Index, San Dimas High ranks #2 of 3 high schools in San Dimas, CA. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all high schools in San Dimas on the city page.
What other schools are in Bonita Unified?
Besides San Dimas High, Bonita Unified also operates Bonita High (1,911 students), Ramona Middle (1,371 students), and Lone Hill Middle (870 students). See the Bonita Unified district page for the complete list.