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Average

#6024 of 9,533 schools in CA

Delta Sierra Middle

Middle School · Lodi Unified

2255 Wagner Heights Rd., Stockton, CA 95209

Enrollment

576

Student-Teacher

20.6:1

Score

5.8

Grades

7th – 8th

Updated 2022-23

How this school compares

In Stockton

#57 of 109

public schools

California middle schools

#881 of 1,349

In district

#20 of 46

Lodi Unified

School environment

7.2 / 10

Strong

About Delta Sierra Middle

Delta Sierra Middle is a regular public middle school in Stockton, California, serving students in grades seven and eight. With an enrollment of 576 students, the school boasts a student-to-teacher ratio of 20.6:1, ensuring that each student receives some individual attention from teachers. Delta Sierra Middle offers a range of programs to support its diverse student body, though academic performance as measured by state standards currently places it in the bottom third among California schools, with room for improvement.

Located in a large city setting, Delta Sierra Middle is situated at 2255 Wagner Heights Road and provides a community-focused educational environment. While test scores indicate areas where the school can grow academically, there are many positive aspects to consider, such as dedicated teachers and supportive staff who work hard to meet students' needs. Delta Sierra Middle sits in the heart of Stockton, offering easy access for families living nearby and providing a strong sense of community within its large city surroundings.

What Parents Should Know

While current test scores at Delta Sierra Middle are below average, the school shows strong growth metrics — meaning students are making above-average progress year over year. This upward trajectory can be a positive indicator for families who value a school's ability to help students improve, even if absolute scores haven't caught up yet.

The student-teacher ratio at Delta Sierra Middle is 20.6:1, 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 Progress6.7Above Average40%
Year-over-year improvement in student test scores.
View breakdown
Years of Data3
Annual Change-0.76 pts/yr
Data Period2019–2024
TrendStable
Academics3.8Fair35%
Student proficiency on state tests, adjusted for community poverty levels.
View breakdown
Math Proficiency9.9%
Reading/ELA Proficiency20.3%
Math vs. State Avg-24 pts
Reading vs. State Avg-27 pts
Overall Proficiency15%
Expected (poverty-adj.)21%
vs. Expected-5.6 pts
Adjusted Percentile19th
Resources & Environment7.2Very Good25%
Student-teacher ratio, per-pupil spending, and attendance.
View breakdown
Student-Teacher Ratio20.6:1
Per-Pupil Spending$15,234

Delta Sierra Middle — Students at Delta Sierra Middle score 15% proficient, which is below what's typical for similar communities (expected: 21%).

How we calculate scores →

Equity & Diversity

Shown separately, not included in overall score

Free/Reduced Lunch

94.6%

Students qualifying for federal meal assistance

Test Scores CA CAASPP (2023-24)

Math Proficiency 9.9%
School
State
33.7%
ELA Proficiency 22.2%
School
State
46.8%

Based on 10 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
11%
ELA
27%
2021*
Math
9%
ELA
23%
2024
Math
9.9%
ELA
20.3%

* 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: 6.7/10.

How Delta Sierra Middle Compares

See how Delta Sierra Middle performs across key quality dimensions compared to state benchmarks.

Overall Score
5.8/10
37th percentile in CA
Academic
3.8/10
3.8/10
Growth
6.7/10
Above average
Environment
7.2/10
Above average

Funding & Resources

Free/Reduced Lunch
Students eligible for subsidized meals
95%
Teaching Staff
21:1 student-teacher ratio
28 teachers

Location

2255 Wagner Heights Rd., Stockton, CA 95209

Nearby Alternatives

Families considering Delta Sierra Middle may also want to explore other middle schools in the area. Christa McAuliffe Middle (rated 7.4/10, 1.5 miles away), which scores notably higher. Another option is Elkhorn (rated 7.1/10, 1.1 miles away), which scores notably higher. Additionally, Sierra Middle (rated 5.9/10, 1.9 miles away), with a very similar rating. For more schools in Stockton, see our Stockton schools guide .

Nearby Schools

20 within 2.3 mi
School Distance Rating
Plaza Robles Continuation High Stockton 0.2 mi 5.7
Creekside Elementary Stockton 0.6 mi 3.9
Wagner-Holt Elementary Stockton 0.7 mi 5.8
John Muir Elementary Stockton 0.9 mi 7.7
Oakwood Elementary Stockton 0.7 mi 5.5
Colonial Heights Stockton 0.9 mi 6.6
Elkhorn Stockton 1.1 mi 7.1
John R. Williams Stockton 1.2 mi 4.8
Bear Creek High Stockton 1.2 mi 5.4
Podesta Ranch Elementary Stockton 1.2 mi 7.0
Julia Morgan Elementary Stockton 1.4 mi 5.0
Kennedy Elementary Stockton 1.4 mi 6.0
Lincoln High Stockton 1.7 mi 4.5
Christa McAuliffe Middle Stockton 1.5 mi 7.4
Sierra Middle Stockton 1.9 mi 5.9
PRESENTATION PARISH SCHOOL Stockton 2.0 mi 6.0
Presentation Parish School Stockton 2.0 mi
Lincoln Elementary Stockton 1.9 mi 4.6
Tully C. Knoles Stockton 2.3 mi 3.8
Mable Barron Stockton 2.3 mi 3.8

Neighborhood Census ACS (2019-2023)

Census data for ZIP 95209 (ACS 2019-2023 5-Year Estimates) · Data sources

Median Income

$106,056

Median Home Value

$464,900

Median Rent

$1,813/mo

Population

46,567

College Educated

25%

Homeownership

74.2%

Avg Commute

31.6 min

Poverty Rate

7.6%

Median Age

36.6

Community Profile

The community surrounding Delta Sierra Middle has a median household income of $106,056. It is an area where 25% of adults hold a bachelor's degree or higher. The median home value in the area is $464,900, with a median rent of $1,813/month. The local poverty rate of 7.6% 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
Alliance Kory Hunter Middle Los Angeles, CA 5.8
C. E. Utt Middle Tustin, CA 5.8
Francisco Middle San Francisco, CA 5.8
Hilmar Middle Hilmar, CA 5.8
Jackson Junior High Jackson, CA 5.8
Jefferson Middle Oceanside, CA 5.8

Frequently Asked Questions

Common questions about Delta Sierra Middle

What grades does Delta Sierra Middle serve?

Delta Sierra Middle serves students in grades 7th through 8th.

How many students attend Delta Sierra Middle?

Delta Sierra Middle has an enrollment of approximately 576 students.

What is the student-teacher ratio at Delta Sierra Middle?

The student-teacher ratio at Delta Sierra Middle is 20.6:1. A lower ratio generally means more individual attention per student. The national average is approximately 16:1 for public schools.

How does Delta Sierra Middle rank in CA?

Delta Sierra Middle is ranked #6024 out of 9,533 schools in CA.

What is Delta Sierra Middle's MySchoolScout rating?

Delta Sierra Middle has a composite rating of 5.8 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 Delta Sierra Middle?

Based on the most recent state assessment data, Delta Sierra Middle has 9.9% math proficiency and 22.2% reading/ELA proficiency.

Is Delta Sierra Middle a charter school?

No, Delta Sierra Middle is not a charter school. It is a traditional public school operated by the local school district.

Is Delta Sierra Middle a Title I school?

No, Delta Sierra Middle is not currently a Title I school.

What does the Free & Reduced Lunch percentage mean for Delta Sierra Middle?

94.6% of students at Delta Sierra Middle 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
High (3,836/100K)

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

Quick Facts NCES CCD (SY 2022-23)

Grades
7th – 8th
Enrollment
576
Student-Teacher Ratio
20.6:1
Teachers (FTE)
28
Free/Reduced Lunch
94.6%
Type
regular
Setting
Large City
County
San Joaquin County
Data Year
2023–2024

District

Lodi Unified
District Enrollment
27,172
Schools in District
49
Per-Pupil Spending
$16,533
District Rank
#20 of 46

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

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