Excellent
#729 of 9,533 schools in CA
Top 8% in state
San Dimas High
High School · Bonita Unified
115 West Allen Ave., San Dimas, CA 91773
Enrollment
1,248
Student-Teacher
21.2:1
Score
8.4
Grades
9th – 12th
Enrollment
1,248
Student-Teacher
21.2:1
Score
8.4
Grades
9th – 12th
Updated
2022-23
Updated 2022-23
How this school compares
In San Dimas
#1 of 14
public schools
California high schools
#118 of 1,892
In district
#1 of 13
Bonita Unified
Academic growth
9.3 / 10
Exceptional
About San Dimas High
San Dimas High is a public high school in San Dimas, CA, part of the Bonita Unified. The school serves approximately 1,248 students in grades 9th – 12th with a student-teacher ratio of 21.2:1. It holds a MySchoolScout rating of 8.4/10, placing it in the 92.4th percentile among CA schools — an above average rating overall.
Students demonstrate 51% proficiency in math, 19 points above the state average and 80% in reading/language arts, 28 points above the state average. The school scores particularly well in student growth (9.3/10). Located in a neighborhood with a median household income of $105,926, where 40% of adults hold a bachelor's degree or higher.
The school is situated in a large suburban setting.
What Parents Should Know
The student-teacher ratio at San Dimas High is 21.2:1, which is higher than the national average. This may mean larger class sizes, so parents should ask about classroom support, teaching assistants, and how the school differentiates instruction for students who need extra help.
Score Breakdown
Full Profile · 4/4 metricsView breakdown
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San Dimas High — Students at San Dimas High score 62% proficient, which is above what's typical for similar communities (expected: 57%).
Equity & Diversity
Shown separately, not included in overall scoreFree/Reduced Lunch
32.5%
Students qualifying for federal meal assistance
Test Scores CA CAASPP (2023-24)
Based on 8 test records from CA state assessments. About our data
Proficiency Trend
↑ ImprovingAverage proficiency (% at or above grade level) across Math & ELA over time.
* COVID-affected year — test participation was uneven nationwide. This data is weighted at 50% in the Growth score calculation.
Source: EdFacts (NCES) and state assessment data. Growth score: 9.3/10.
How San Dimas High Compares
See how San Dimas High performs across key quality dimensions compared to state benchmarks.
Funding & Resources
Performance Trends
Math proficiency has improved from 37% (2019) to 47.8% (2024). Reading/ELA proficiency has improved from 74% (2019) to 77.21% (2024).
Location
115 West Allen Ave., San Dimas, CA 91773
Nearby Alternatives
Families considering San Dimas High may also want to explore other high schools in the area. Chaparral High (Continuation) (rated 7.0/10, 1.7 miles away), a more accessible option. Additionally, Arrow High (Continuation) (rated 5.4/10, 1.6 miles away, in nearby Glendora), a more accessible option. For more schools in San Dimas, see our San Dimas schools guide .
Nearby Schools
20 within 1.9 mi| School | Distance | Rating |
|---|---|---|
| Adult Transition Program San Dimas | 0.0 mi | — |
| Lone Hill Middle San Dimas | 0.2 mi | 7.5 |
| CANYON VIEW SCHOOL San Dimas | 0.4 mi | 6.7 |
| DOVE DAY SCHOOL- EDUCATIONAL PROGRAMS- INC. San Dimas | 0.6 mi | — |
| ARROW MONTESSORI SCHOOL OF SAN DIMAS San Dimas | 1.1 mi | 6.2 |
| Arrow Montessori School of San Dimas San Dimas | 1.1 mi | — |
| Gladstone Elementary San Dimas | 1.2 mi | 7.2 |
| Arma J. Shull Elementary San Dimas | 1.3 mi | 7.2 |
| Glen Oak Elementary Covina | 1.1 mi | 6.7 |
| Willow Elementary Glendora | 1.3 mi | 8.8 |
| Chaparral High (Continuation) San Dimas | 1.7 mi | 7.0 |
| Vista (Alternative) San Dimas | 1.7 mi | — |
| Arrow High (Continuation) Glendora | 1.6 mi | 5.4 |
| Oak Knoll Alternative Glendora | 1.6 mi | 5.4 |
| Bridges Community Day Glendora | 1.6 mi | — |
| VIA VERDE MONTESSORI SCHOOL CORP. San Dimas | 1.8 mi | — |
| VIA VERDE MONTESSORI SCHOOL San Dimas | 1.8 mi | 6.4 |
| Fred Ekstrand Elementary San Dimas | 1.6 mi | 8.0 |
| ST LOUISE DE MARILLAC SCHOOL Covina | 1.6 mi | 5.5 |
| Sutherland Elementary Glendora | 1.9 mi | 6.5 |
Neighborhood Census ACS (2019-2023)
Census data for ZIP 91773 (ACS 2019-2023 5-Year Estimates) · Data sources
Median Income
$105,926
Median Home Value
$754,700
Median Rent
$2,232/mo
Population
33,917
College Educated
40.4%
Homeownership
71.3%
Avg Commute
31.9 min
Poverty Rate
9.2%
Median Age
42.7
Community Profile
The community surrounding San Dimas High has a median household income of $105,926. It is a well-educated community where 40% of adults hold a bachelor's degree or higher. The median home value in the area is $754,700, with a median rent of $2,232/month. The local poverty rate of 9.2% is relatively low. The average commute for residents is 32 minutes. Source: U.S. Census ACS 2022 5-Year Estimates.
Similar Schools
Schools in the same state with comparable level, size, and ratings
| School | Rating |
|---|---|
| Azusa High Azusa, CA | 8.4 |
| Miramonte High Orinda, CA | 8.4 |
| Panorama High Panorama City, CA | 8.4 |
| West Campus Sacramento, CA | 8.4 |
| Acalanes High Lafayette, CA | 8.3 |
| Aragon High San Mateo, CA | 8.5 |
Frequently Asked Questions
Common questions about San Dimas High
What grades does San Dimas High serve?
San Dimas High serves students in grades 9th through 12th.
How many students attend San Dimas High?
San Dimas High has an enrollment of approximately 1,248 students.
What is the student-teacher ratio at San Dimas High?
The student-teacher ratio at San Dimas High is 21.2:1. A lower ratio generally means more individual attention per student. The national average is approximately 16:1 for public schools.
How does San Dimas High rank in CA?
San Dimas High is ranked #729 out of 9,533 schools in CA.
What is San Dimas High's MySchoolScout rating?
San Dimas High has a composite rating of 8.4 out of 10 on MySchoolScout. This score combines academic performance, student growth, and school environment into a single score. Equity data is shown separately for context.
What are the test scores at San Dimas High?
Based on the most recent state assessment data, San Dimas High has 50.5% math proficiency and 79.6% reading/ELA proficiency.
Is San Dimas High a charter school?
No, San Dimas High is not a charter school. It is a traditional public school operated by the local school district.
Is San Dimas High a Title I school?
No, San Dimas High is not currently a Title I school.
What does the Free & Reduced Lunch percentage mean for San Dimas High?
32.5% of students at San Dimas High qualify for free or reduced-price lunch. This is a commonly used indicator of economic need and provides important context when interpreting test scores.
Explore More Schools
Neighborhood Context
Powered by 
FBI UCR 2024. City-level (San Dimas). Data >1 year old.
Quick Facts NCES CCD (SY 2022-23)
- Grades
- 9th – 12th
- Enrollment
- 1,248
- Student-Teacher Ratio
- 21.2:1
- Teachers (FTE)
- 59
- Free/Reduced Lunch
- 32.5%
- Type
- regular
- Setting
- Large Suburb
- County
- Los Angeles County
- Phone
- (909) 971-8230
- Data Year
- 2023–2024
Resources & Links
District
Bonita Unified- District Enrollment
- 9,957
- Schools in District
- 15
- Per-Pupil Spending
- $14,544
- District Rank
- #1 of 13
Other Schools in This District
How We Rate Schools
Every school receives a composite score from 1 to 10 based on four pillars: Academic Performance (50%), Student Growth (20%), Equity (15%), and Learning Environment (15%). Scores are built from publicly available data including standardized test results, enrollment figures, and school climate indicators.
Read our full methodologyRelated reading
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