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Elementary Schools in San Dimas, California: San Dimas schools aren't just reaching proficiency — they're pushing students beyond it.

Above Average2024–25 data4 schools · avg 59.3/100

San Dimas, California has 4 ranked elementary schools with an average Scope Score of 59.3/100 — 15.5 points above the state average of 43.8. The highest-scoring school is Arma J. Shull Elementary at 74/100, where 54.0% of students exceed the state standard on the 2025 CAASPP assessment. San Dimas schools average 39.7% exceeded standard (state: 21.6%) — this exceeded-vs-met distinction reveals whether schools push students beyond proficiency or pace toward it. Of 4 schools, 1 High Ceiling stand out for their performance profiles. Chronic absenteeism averages 11.6% (below the state average of 18.1%). Data source: California Department of Education CAASPP 2025, analyzed by SchoolScope.

Avg Scope Score
59.3
State avg: 43.8
SchoolScope composite
Score Range
22.8
51.0 – 73.8
Avg Exceeded %
39.7%
State avg: 21.6%
CDE CAASPP 2025
Chronic Absenteeism
11.6%
State avg: 18.1%
CDE Attendance 2025
Schools Ranked
4
With Scope Scores
LevelSchoolsAvg ScoreExceededvs State
Elementary4Solid
59.3/100
39.7%+15.5
High2Developing
46.5/100
16.9%-1.0
Middle2Solid
65.8/100
37.3%+25.4

How San Dimas schools compare

San Dimas has 4 ranked elementary schools with an average Scope Score of 59.3/100 — 15.5 points above the state average of 43.8 (CDE CAASPP 2025).

The top-ranked school is Arma J. Shull Elementary with a Scope Score of 74 and 54.0% of students exceeding standard.

These schools are pushing students past the bar, not just to it. San Dimas schools average 39.7% exceeding standard — well above the statewide average of 21.6%.

Chronic absenteeism in San Dimas averages 11.6% — below the state average of 18.1%.

How we score · Exceeded 40% · Met+Exceeded 22% · Growth 15% · Absenteeism 10% · Suspension 5% · ELPAC 5% · Baseline 3%

School archetypes in San Dimas

1 High Ceiling1 Strong All-Around1 Culture First1 Building Momentum

Archetypes are data-driven labels based on Scope Score dimensions. Learn more

For the data nerds

Every school in San Dimas

ranked by Scope Score · 2024–25 CAASPP

#SchoolExceededScore
1Arma J. Shull Elementary
Bonita Unified High Ceiling
54.0%Strong
74/100
2Ramona Middle
Bonita Unified Strong All-Around
40.7%Solid
69/100
3San Dimas High
Bonita Unified Strong All-Around
30.4%Solid
69/100
4Lone Hill Middle
Bonita Unified Building Momentum
33.8%Solid
62/100
5Gladstone Elementary
Bonita Unified Strong All-Around
37.0%Solid
60/100
6Allen Avenue Elementary
Bonita Unified Culture First
31.4%Solid
52/100
7Fred Ekstrand Elementary
Bonita Unified Building Momentum
36.5%Solid
51/100
8Chaparral High (Continuation)
Bonita Unified Building Momentum
3.3%Needs Support
24/100
Source: CDE CAASPP 2025 · 8 schoolsMethodology · Explore all schools

Data source: California Department of Education · CAASPP 2024-25 · Methodology

Scores are SchoolScope's analysis of public data, not official CDE ratings. They represent one way of interpreting test results and should not be the sole basis for school decisions.

Private Schools in San Dimas

Private schools don't participate in California's standardized testing (CAASPP) and cannot be scored or ranked. Showing enrollment, student-teacher ratio, and affiliation where available.

Holy Name of Mary Elementary School
Roman Catholic · Grades Pre-K-8 · 318 students
22:1Private
Canyon View School
Nonsectarian · Grades 1-12 · 104 students
9:1Private
Via Verde Montessori School
Nonsectarian · Grades Pre-K-2 · 82 students
4:1Private
Arrow Montessori School of San Dimas
Nonsectarian · Grades Pre-K-8 · 46 students
8:1Private
Dove Day School- Educational Programs- Inc.
Nonsectarian · Grades Pre-K-3 · 14 students
7:1Private
What Scope Scores can't tell you about San Dimas

Numbers tell you whether students are clearing the bar. A school visit tells you whether they're happy doing it. These metrics are intentionally missing from the Scope Score: class sizes and student-teacher interaction quality; arts, music, athletics, and enrichment programs; teacher experience and turnover; campus safety and social-emotional support; parent and community engagement; quality of special education and gifted programs; how school zones and enrollment boundaries affect access. Full methodology

Frequently asked questions

Are the schools in San Dimas good?
San Dimas's 4 ranked elementary schools average a Scope Score of 59.3/100, which is 15.5 points above the state average. 39.7% of students exceed the state standard on average (state average: 21.6%). The Scope Score weights seven dimensions: exceeded standard (40%), met standard (22%), grade-level growth (15%), chronic absenteeism (10%), ELPAC proficiency (5%), suspension rate (5%), and baseline proficiency (3%). Data source: California Department of Education CAASPP 2025, analyzed by SchoolScope.
What is the best elementary school in San Dimas?
The highest-scoring elementary school in San Dimas is Arma J. Shull Elementary with a Scope Score of 74/100 and 54.0% of students exceeding the state standard. Rankings are based on SchoolScope's 2025 Scope Score, which measures academic performance and school climate using publicly available California data. See full methodology.
How do San Dimas schools compare to the state average?
San Dimas elementary schools average a Scope Score of 59.3/100 — 15.5 points above the state average of 43.8. The exceeded rate averages 39.7% vs. 21.6% statewide. Chronic absenteeism averages 11.6% vs. 18.1% statewide.
How many schools are in San Dimas?
San Dimas has 4 ranked elementary schools with Scope Scores. Schools are ranked using a weighted composite of CAASPP test performance, growth trajectory, chronic absenteeism, and suspension rate. Schools with insufficient testing data are not ranked.
What does the Scope Score measure?
The Scope Score is SchoolScope's proprietary composite rating (0–100) based on seven dimensions of publicly available California school data: the exceeded-vs-met standard split, overall proficiency, grade 3–5 growth, chronic absenteeism, suspension rate, ELPAC English Learner proficiency, and baseline proficiency. Unlike single-number ratings, the Scope Score separates students who "exceeded" from those who "met" the standard — revealing whether a school pushes students beyond proficiency or paces toward it. Full methodology and weights.

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