Skip to main content

Very Good

#3127 of 9,533 schools in CA

Top 33% in state

Mt. Diablo Elementary

Elementary School · Mt. Diablo Unified

5880 Mt. Zion Dr., Clayton, CA 94517

Enrollment

738

Student-Teacher

29.5:1

Score

7.1

Grades

Kindergarten – 5th

Updated 2022-23

How this school compares

In Clayton

#2 of 2

public schools

California elementary schools

#2,080 of 5,817

In district

#9 of 47

Mt. Diablo Unified

Academic growth

8.7 / 10

Exceptional

About Mt. Diablo Elementary

Mt. Diablo Elementary serves 738 students in grades kindergarten through fifth in Clayton, California, earning a solid 7.4 out of 10 rating from MySchoolScout. The school ranks in the 78th percentile statewide, placing #2089 out of 9566 California elementary schools, with particularly strong academic performance reflected in its 9.1 out of 10 academic score.

Students consistently perform well on standardized assessments, with 69% achieving proficiency or above in both English Language Arts and mathematics across all grade levels. The school operates with 25 full-time equivalent teachers, resulting in a student-teacher ratio of 29.5 to 1, which is higher than ideal but reflects the school's popularity and enrollment size. Mt.

Diablo Elementary benefits from its location in an affluent and educated community, where 57% of residents hold bachelor's degrees or higher and the median household income reaches $156,870. The low poverty rate of just 3% indicates strong community resources and family support systems that contribute to student success. Located on Mt.

Zion Drive in this large suburban area of Contra Costa County, the school serves a well-established neighborhood where families value education and community engagement, creating an environment conducive to academic achievement.

What Parents Should Know

The student-teacher ratio at Mt. Diablo Elementary is 29.5:1, 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 · 3/3 metrics
Student Progress8.7Excellent50%
Year-over-year improvement in student test scores.
View breakdown
Years of Data3
Annual Change+0.43 pts/yr
Data Period2019–2024
TrendStable
Academics8.1Excellent30%
Student proficiency on state tests, adjusted for community poverty levels.
View breakdown
Math Proficiency69%
Reading/ELA Proficiency69%
Math vs. State Avg+23.3 pts
Reading vs. State Avg+26.2 pts
Overall Proficiency69%
Expected (poverty-adj.)71%
vs. Expected-1.8 pts
Adjusted Percentile71th
College ReadinessNot Available

Data not available for this school

Resources & Environment1.8Significantly Below Average20%
Student-teacher ratio, per-pupil spending, and attendance.
View breakdown
Student-Teacher Ratio29.5:1
Per-Pupil Spending$13,784

Mt. Diablo Elementary — Students at Mt. Diablo Elementary score 69% proficient, which is below what's typical for similar communities (expected: 71%).

How we calculate scores →

Equity & Diversity

Shown separately, not included in overall score

Free/Reduced Lunch

8.4%

Students qualifying for federal meal assistance

Test Scores CA CAASPP (2023-24)

Math Proficiency 66.3%
School
State
39.4%
ELA Proficiency 69.3%
School
State
45.3%

Based on 12 test records from CA state assessments. About our data

Proficiency Trend

→ Stable

Average proficiency (% at or above grade level) across Math & ELA over time.

2019
Math
63%
ELA
72%
2021*
Math
58%
ELA
67%
2024
Math
69.2%
ELA
69.2%

* 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: 8.7/10.

How Mt. Diablo Elementary Compares

See how Mt. Diablo Elementary performs across key quality dimensions compared to state benchmarks.

Overall Score
7.1/10
67th percentile in CA
Academic
8.1/10
8.1/10
Growth
8.7/10
Above average
Environment
1.8/10
Below average

Funding & Resources

Free/Reduced Lunch
Students eligible for subsidized meals
8%
Teaching Staff
30:1 student-teacher ratio
25 teachers

Location

5880 Mt. Zion Dr., Clayton, CA 94517

Nearby Alternatives

Families considering Mt. Diablo Elementary may also want to explore other elementary schools in the area. KINGS VALLEY CHRISTIAN SCHOOL (rated 6.5/10, 3.5 miles away, in nearby Concord), with a comparable rating. Another option is Mountain View Elementary (rated 6.1/10, 3.0 miles away, in nearby Concord), with a comparable rating. Additionally, TABERNACLE CHRISTIAN SCHOOLS, INC. (rated 5.4/10, 3.4 miles away, in nearby Concord), a more accessible option. For more schools in Clayton, see our Clayton schools guide .

Nearby Schools

20 within 3.7 mi
School Distance Rating
Pine Hollow Middle Concord 0.8 mi 5.3
Highlands Elementary Concord 1.0 mi 4.8
Hope Academy for Dyslexics Concord 1.3 mi
HOPE ACADEMY FOR DYSLEXICS Concord 1.3 mi 6.5
Diablo View Middle Clayton 1.2 mi 7.2
Clayton Valley Charter High Concord 1.7 mi 7.0
Ayers Elementary Concord 2.0 mi 5.2
MYRTLE FARM MONTESSORI SCHOOL Concord 2.2 mi
Voyager Academy Concord 2.3 mi
STEP BY STEP MONTESSORI SCHOOL Concord 2.2 mi
Silverwood Elementary Concord 2.3 mi 3.4
ANGELS MONTESSORI PRESCHOOL Concord 2.6 mi
Mountain View Elementary Concord 3.0 mi 6.1
Tabernacle Christian, Inc. Concord 3.4 mi
TABERNACLE CHRISTIAN SCHOOLS, INC. Concord 3.4 mi 5.4
WOOD ROSE ACADEMY Concord 3.3 mi 4.9
Wood Rose Academy Concord 3.3 mi
King's Valley Christian School Concord 3.4 mi
KINGS VALLEY CHRISTIAN SCHOOL Concord 3.5 mi 6.5
Concord High Concord 3.7 mi 5.0

Neighborhood Census ACS (2019-2023)

Census data for ZIP 94517 (ACS 2019-2023 5-Year Estimates) · Data sources

Median Income

$164,860

Median Home Value

$995,600

Median Rent

$3,501/mo

Population

12,164

College Educated

57.7%

Homeownership

90.1%

Avg Commute

39.7 min

Poverty Rate

4.2%

Median Age

43.9

Community Profile

The community surrounding Mt. Diablo Elementary has a median household income of $164,860. It is a well-educated community where 58% of adults hold a bachelor's degree or higher. The median home value in the area is $995,600, with a median rent of $3,501/month. The local poverty rate of 4.2% is relatively low. The average commute in the area is 40 minutes, which is above the national average. Source: U.S. Census ACS 2022 5-Year Estimates.

Similar Schools

Schools in the same state with comparable level, size, and ratings

School Rating
Adams Elementary Riverside, CA 7.1
Alpine Vista Tulare, CA 7.1
Ansel Adams Stockton, CA 7.1
Baldwin (Julia) Elementary San Jose, CA 7.1
Bassett Street Elementary Lake Balboa, CA 7.1
Bay Farm Alameda, CA 7.1

Frequently Asked Questions

Common questions about Mt. Diablo Elementary

What grades does Mt. Diablo Elementary serve?

Mt. Diablo Elementary serves students in grades Kindergarten through 5th.

How many students attend Mt. Diablo Elementary?

Mt. Diablo Elementary has an enrollment of approximately 738 students.

What is the student-teacher ratio at Mt. Diablo Elementary?

The student-teacher ratio at Mt. Diablo Elementary is 29.5:1. A lower ratio generally means more individual attention per student. The national average is approximately 16:1 for public schools.

How does Mt. Diablo Elementary rank in CA?

Mt. Diablo Elementary is ranked #3127 out of 9,533 schools in CA.

What is Mt. Diablo Elementary's MySchoolScout rating?

Mt. Diablo Elementary has a composite rating of 7.1 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 Mt. Diablo Elementary?

Based on the most recent state assessment data, Mt. Diablo Elementary has 66.3% math proficiency and 69.3% reading/ELA proficiency.

Is Mt. Diablo Elementary a charter school?

No, Mt. Diablo Elementary is not a charter school. It is a traditional public school operated by the local school district.

Is Mt. Diablo Elementary a Title I school?

No, Mt. Diablo Elementary is not currently a Title I school.

What does the Free & Reduced Lunch percentage mean for Mt. Diablo Elementary?

8.4% of students at Mt. Diablo 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.

11 schools nearby View map →

Neighborhood Context

City Safety
Average (591/100K)

FBI UCR 2024. City-level (Clayton). Data >1 year old.

Quick Facts NCES CCD (SY 2022-23)

Grades
Kindergarten – 5th
Enrollment
738
Student-Teacher Ratio
29.5:1
Teachers (FTE)
25
Free/Reduced Lunch
8.4%
Type
regular
Setting
Large Suburb
County
Contra Costa County
Data Year
2023–2024

District

Mt. Diablo Unified
District Enrollment
29,356
Schools in District
52
Per-Pupil Spending
$15,421
District Rank
#9 of 47

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 methodology

Related reading

Get school insights in your inbox

New rankings, best-schools lists, and parent guides — delivered free. No spam, unsubscribe anytime.

We respect your privacy. Unsubscribe at any time.