Very Good
#2067 of 9,539 schools in CA
Top 22% in state
J. Marion Roynon Elementary
Elementary School · Bonita Unified
115 West Allen Ave., San Dimas, CA 91773
Enrollment
804
Student-Teacher
24.4:1
Score
7.7
Grades
Kindergarten – 5th
Enrollment
804
Student-Teacher
24.4:1
Score
7.7
Grades
Kindergarten – 5th
Data vintage
2022-23
Data vintage2022-23
How this school compares
California schools
#2,067 of 9,539
In San Dimas
#5 of 14
public schools
In district
#5 of 13
Bonita Unified
Equity
9.5 / 10
Excellent
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J. Marion Roynon Elementary
Elementary School in San Dimas · grades Kindergarten – 5th. Start here, then compare fit against nearby and district options.
Bonita High
0.2 mi away. Use as a geographic alternative in the same move search.
Grace Miller Elementary
0.6 mi away. Use as a geographic alternative in the same move search.
About J. Marion Roynon Elementary
J. Marion Roynon Elementary is a public elementary school in San Dimas, CA, part of Bonita Unified. J.
Marion Roynon Elementary serves approximately 804 students, and covers grades Kindergarten-5th, and has a 24.4:1 student-teacher ratio. J. Marion Roynon Elementary has a current MySchoolScout rating of 7.7 out of 10 and ranks #2,067 of 9,539 schools in CA.
Structured state assessment records for J. Marion Roynon Elementary show 63% math proficiency (multi-year average, 2009-2024) and 66% reading/ELA proficiency (multi-year average, 2009-2024).
- This school 7.7 · Very Good
- District avg 7.1
- CA avg 6.2
What Parents Should Know
J. Marion Roynon Elementary runs 24.4:1 students to teachers, above the national average. That often means bigger classes. Ask how the school supports kids who need extra help, and whether there are teaching assistants or small-group time.
Score Breakdown
Full Profile · 3/3 metricsView breakdown
View breakdown
View breakdown
J. Marion Roynon Elementary — Students at J. Marion Roynon Elementary score 67% proficient, which is above what's typical for similar communities (expected: 49%).
Equity & Diversity
Shown separately, not included in overall scoreFree/Reduced Lunch
44.5%
Students qualifying for federal meal assistance
Test Scores CA CAASPP (2023-24)
Based on 30 test records from CA state assessments. About our data
Proficiency Trend
→ StableAverage proficiency (% at or above grade level) across Math & ELA over time.
Source: EdFacts (NCES) and state assessment data. Growth score: 8.5/10.
How J. Marion Roynon Elementary Compares
See how J. Marion Roynon Elementary performs across key quality dimensions compared to state benchmarks.
Funding & Resources
Programs & Offerings
Data as of 2021-22 · Source: CRDC via Urban Institute · Learn more
Location
115 West Allen Ave., San Dimas, CA 91773
Nearby Alternatives
Families considering J. Marion Roynon Elementary may also want to explore other elementary schools in the area. Grace Miller Elementary (rated 7.8/10, 0.6 miles away), with a very similar rating. Another option is La Verne Science and Technology Charter (rated 7.7/10, 1.5 miles away, in nearby Pomona), with a very similar rating. Additionally, L.A. COUNTY FAIR ASSOC. CHILD DEVELOPMENT CENTER (rated 7.5/10, 1.1 miles away, in nearby Pomona), with a very similar rating. For more schools in San Dimas, see our San Dimas schools guide .
Nearby Schools
20 within 1.5 mi| School | Distance | Rating |
|---|---|---|
| Bonita High San Dimas | 0.2 mi | 8.1 |
| Grace Miller Elementary San Dimas | 0.6 mi | 7.8 |
| ACADEMY OF SPORTS SCIENCE La Verne | 0.7 mi | 5.2 |
| LUTHERAN HIGH SCHOOL La Verne | 0.9 mi | 8.2 |
| L.A. COUNTY FAIR ASSOC. CHILD DEVELOPMENT CENTER Pomona | 1.1 mi | 7.5 |
| CITY OF KNOWLEDGE SCHOOL Pomona | 1.0 mi | 7.7 |
| City of Knowledge Pomona | 1.0 mi | — |
| Joan Macy School La Verne | 1.1 mi | — |
| JOAN MACY SCHOOL La Verne | 1.1 mi | 7.1 |
| La Verne Heights Elementary San Dimas | 1.2 mi | 7.1 |
| ICC Community School Pomona | 1.1 mi | — |
| CALVARY BAPTIST SCHOOLS La Verne | 1.2 mi | 7.0 |
| Damien High School La Verne | 1.2 mi | — |
| DAMIEN HIGH SCHOOL La Verne | 1.2 mi | 6.0 |
| Calvary Baptist Schools La Verne | 1.2 mi | — |
| Haynes Family of Programs dba Bliss Academy La Verne | 1.4 mi | — |
| La Verne Science and Technology Charter Pomona | 1.5 mi | 7.7 |
| Harrison Elementary Pomona | 1.3 mi | 5.5 |
| LEROY HAYNES EDUCATIONAL CENTER La Verne | 1.5 mi | 6.6 |
| HAYNES EDUCATION CENTER La Verne | 1.5 mi | 6.3 |
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
Similar Schools
Schools in the same state with comparable level, size, and ratings
| School | Rating |
|---|---|
| Akira Yokomi Elementary Fresno, CA | 7.7 |
| Beechwood Elementary Fullerton, CA | 7.7 |
| Benchley/Weinberger Elementary San Diego, CA | 7.7 |
| Bill Libbon Elementary Santa Maria, CA | 7.7 |
| Bowman Charter Auburn, CA | 7.7 |
| Bud Rank Elementary Clovis, CA | 7.7 |
Frequently Asked Questions
Common questions about J. Marion Roynon Elementary
What grades does J. Marion Roynon Elementary serve?
J. Marion Roynon Elementary serves students in grades Kindergarten through 5th.
How many students attend J. Marion Roynon Elementary?
J. Marion Roynon Elementary has an enrollment of approximately 804 students.
What is the student-teacher ratio at J. Marion Roynon Elementary?
The student-teacher ratio at J. Marion Roynon Elementary is 24.4:1. A lower ratio generally means more individual attention per student. The national average is approximately 16:1 for public schools.
How does J. Marion Roynon Elementary rank in CA?
J. Marion Roynon Elementary ranks #2,067 of 9,539 schools in CA.
What is J. Marion Roynon Elementary's MySchoolScout rating?
J. Marion Roynon Elementary has a current MySchoolScout rating of 7.7 out of 10. This score combines the level-appropriate components shown in the rating breakdown; equity data is shown separately for context.
What are the test scores at J. Marion Roynon Elementary?
Based on loaded state assessment records, J. Marion Roynon Elementary has 63% math proficiency (multi-year average, 2009-2024) and 66% reading/ELA proficiency (multi-year average, 2009-2024).
Is J. Marion Roynon Elementary a charter school?
No, J. Marion Roynon Elementary is not a charter school. It is a traditional public school operated by the local school district.
Is J. Marion Roynon Elementary a Title I school?
No, J. Marion Roynon Elementary is not currently a Title I school.
What does the Free & Reduced Lunch percentage mean for J. Marion Roynon Elementary?
44.5% of students at J. Marion Roynon Elementary qualify for free or reduced-price lunch. This is a commonly used indicator of economic need and provides important context when interpreting test scores.
Neighborhood Context
Powered by 
Quick Facts NCES CCD (SY 2022-23)
- Grades
- Kindergarten – 5th
- Enrollment
- 804
- Student-Teacher Ratio
- 24.4:1
- Teachers (FTE)
- 33
- Free/Reduced Lunch
- 44.5%
- Type
- regular
- Setting
- Large Suburb
- County
- Los Angeles County
- Chronic Absenteeism (SY 2022-23)
- 28.0%
- Phone
- (909) 971-8207
Resources & Links
District
Bonita Unified- District Enrollment
- 9,957
- Schools in District
- 15
- Per-Pupil Spending
- $14,544
- District Rank
- #5 of 13
Other Schools in This District
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