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Below Average

#7843 of 9,539 schools in CA

Delta Sierra Middle

Middle School · Lodi Unified · Stockton, CA

A Lodi Unified middle school where students score 6 points below what's typical for similar communities.

2255 Wagner Heights Rd., Stockton, CA 95209

  • Math 10% vs CA 34% (2024)
  • Reading 20% vs CA 47% (2024)
  • 20.6:1 student-teacher ratio

Academics

Full Profile · 3/3 metrics
Student Progress5.8Average40%
Year-over-year improvement in student test scores.
View breakdown
Years of Data15
Annual Change-1.51 pts/yr
Data Period2009–2024
TrendDeclining
Academics3.7Needs Improvement35%
Student proficiency on state tests, adjusted for community poverty levels.
View breakdown
Math Proficiency9.9% (2024 CAASPP)
Reading/ELA Proficiency20.3% (2024 CAASPP)
Math vs. State Avg-24 pts
Reading vs. State Avg-27 pts
Overall Proficiency15% (2024 CAASPP, Math+ELA)
Expected (poverty-adj.)21% (model expectation from 2024 CAASPP)
vs. Expected-5.9 pts
Adjusted Percentile18th
Resources & Environment3.9Needs Improvement25%
Student-teacher ratio, district spending per student, and attendance.
View breakdown
Student-Teacher Ratio20.6:1
District spending per student$16,533
Chronic Absenteeism52.8%

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

How we calculate scores →

2024 CAASPP proficiency

Most recent published year. School vs. CA average.

Math Proficiency10%(2024 CAASPP)
School
State
34%(2024 CAASPP)
ELA Proficiency20%(2024 CAASPP)
School
State
47%(2024 CAASPP)

Trend

→ Steady

Proficiency is down 18 points across the 16-year record (2009–2024) and has held near 15% recently.

Show all 15 years
2009
Math
29%
ELA
38%
2010
Math
35%
ELA
40%
2011
Math
33%
ELA
42%
2012
Math
32%
ELA
40%
2013
Math
10%
ELA
30%
2014
Math
9%
ELA
20%
2015
Math
12%
ELA
22%
2016
Math
12%
ELA
29%
2017
Math
11%
ELA
31%
2018
Math
11%
ELA
27%
2019
Math
11%
ELA
27%
2020*
Math
9%
ELA
23%
2021*
Math
9%
ELA
23%
2022
Math
10%
ELA
22%
2024
Math
10%
ELA
20%

Multi-year averages used by the rating model: math 15% (multi-year average, 2009-2024) · reading/ELA 28% (multi-year average, 2009-2024)

* COVID-affected year — test participation was uneven nationwide. This data is weighted at 50% in the Growth score calculation.

Based on 34 test records from CA state assessments and EdFacts (NCES).

Equity & diversity

Shown separately, not included in the overall score

Free/reduced lunch

94.6%

Students qualifying for federal meal assistance

How we rate schools

A clear 1–10 score built from public data — growth, academics, and learning environment. No hidden criteria, no pay-to-play.

See how we rate

The neighborhood

Where Delta Sierra Middle sits, and what the surrounding area looks like.

Nearby same-level schools are colored by their score. Pins are locations, not attendance boundaries.

Getting around & local context

  • Walk 70Very Walkable
  • Transit 24Minimal Transit
  • Bike 48Somewhat Bikeable
  • City Safety: High3,836/100K

Powered byWalk Score

FBI Uniform Crime Reporting · 2024 · city context (Stockton), not school-level safety or attendance eligibility. Source details

Source period: 2024. Freshness not available.

Area profileU.S. Census ACS 5-year estimates (ACS 2019–2023 5-year estimates)

Median income

$106,056

Median home value

$464,900

Median rent

$1,813/mo

College educated

25%

Homeownership

74.2%

Poverty rate

7.6%

ACS 2019–2023 5-year estimates for the ZCTA associated with school ZIP 95209; this is area context, not an attendance boundary.

Programs & students

Programs & Offerings

Gifted & Talented ProgramAvailable
This school offers a gifted and talented program for qualifying students.·CRDC via Urban Institute · SY 2021–22

Compare nearby

Nearby same-level schools

4 from a 5-mile search; district fallback available

SchoolScoreGradesDistanceEnrollmentCompare
ElkhornEnrollment path unverified8.54–81.1 mi270Compare →
Christa Mcauliffe MiddleEnrollment path unverified6.67–81.5 mi699Compare →
Sierra MiddleEnrollment path unverified5.27–81.9 mi582Compare →
Able CharterCharter · enrollment unverified6.7K–122.3 mi1,191Compare →

Distance is proximity only; it is not attendance eligibility.

Enrollment path unverified: Potential public school; its attendance or application path has not been classified.

Charter · enrollment unverified: Potential charter option; enrollment requirements have not been verified.

Lodi Unified

Schools in district
49
Rank in district
#38 of 46
District spending per student
$16,533NCES F-33 · FY 2023 · This annual source is three years behind the current year.
District child poverty rate
15.3%Census SAIPE · 2024

Delta Sierra Middle is listed in Lodi Unified; a district label does not verify attendance for an address.

About Delta Sierra Middle

Delta Sierra Middle is a public middle school in Stockton, CA, part of Lodi Unified, serving approximately 576 students in grades 7th-8th with a 20.6:1 student-teacher ratio. It holds a MySchoolScout rating of 4.6 out of 10 and ranks #7,843 of 9,539 schools in CA. State assessment records show 15% math proficiency (multi-year average, 2009-2024) and 28% reading/ELA proficiency (multi-year average, 2009-2024).

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 ranks #7,843 of 9,539 schools in CA.

What is Delta Sierra Middle's MySchoolScout rating?

Delta Sierra Middle has a current MySchoolScout rating of 4.6 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 Delta Sierra Middle?

Based on loaded state assessment records, Delta Sierra Middle has 15% math proficiency (multi-year average, 2009-2024) and 28% reading/ELA proficiency (multi-year average, 2009-2024).

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.

School factsNCES Common Core of Data (CCD) (SY 2023–24)

Grades
7th – 8th
Enrollment
576
Student-Teacher Ratio
20.6:1
Teachers (FTE)
28
Type
regular
Setting
Large City
County
San Joaquin County
Chronic Absenteeism (SY 2022-23)
52.8%
Area population (ZIP 95209)
46,567
Area average commute
31.6 min
Area median age
36.6
About this school's data

Every number on this page comes from a published source with a stated period. Where a source is partial, aging, or describes a surrounding area rather than the school, that limitation is named below.

School directory (enrollment, grades, staff, contact)
NCES Common Core of Data (CCD) · SY 2023–24 · Medium confidence
  • Source period: SY 2023–24. A newer release may be available.
MySchoolScout rating and rank
MySchoolScout ranking model · Low confidence
  • Vintage not available. Do not use this measure alone.
  • Derived as a weighted blend of the component scores shown in Academics from state assessment, EdFacts growth, and NCES resource records.
Math proficiency
State department of education · 2024 CAASPP · Medium confidence
  • Available for part of the eligible units; results may not represent the full area.
  • Source period: 2024 CAASPP. A newer release may be available.
  • Derived from source records rather than read directly from one field.
Reading/ELA proficiency
State department of education · 2024 CAASPP · Medium confidence
  • Available for part of the eligible units; results may not represent the full area.
  • Source period: 2024 CAASPP. A newer release may be available.
  • Derived from source records rather than read directly from one field.
Student progress (growth)
NCES EdFacts · Mixed source periods · Low confidence
  • Vintage not available. Do not use this measure alone.
  • Available for part of the eligible units; results may not represent the full area.
  • Derived as the fitted year-over-year slope of proficiency from multi-year assessment records.
Neighborhood (income, housing, education)
U.S. Census ACS 5-year estimates · ACS 2019–2023 5-year estimates · Low confidence
  • Older source: ACS 2019–2023 5-year estimates. Use as historical context.
  • Reported for the ZCTA for ZIP 95209; this does not measure the attendance area.
Programs (AP/IB, athletics, gifted)
CRDC via Urban Institute · SY 2021–22 · Medium confidence
  • Available for part of the eligible units; results may not represent the full area.
  • Source period: SY 2021–22. A newer release may be available.

Evidence periods: Rating mixed/unknown input periods; assessments multi-year average, 2009-2024; directory SY 2023–24

About our data · How we calculate scores

Related reading

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