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SCHOOL COMMUNITY·LODI UNIFIED·NCES 062223009391

Delta Sierra Middle

2255 Wagner Heights Rd., Stockton, CA 95209 · (209) 953-8510 · San Joaquin County
GRADES 07–08MIDDLE11-CITYTITLE IREGULAR SCHOOL563 STUDENTS
C-
allk12 Grade
Scored higher than 20% of California public middle schools
  • DTest scores Share of students meeting the state standard in reading, math, and other tested subjects, 2023-24 and 2024-25.
  • CBeats expectations How far test scores land above or below what the share of low-income students predicts for a school in this state.
  • A-Three-year trend Change in reading and math proficiency over the last three test years.

Grades compare a school only with schools in the same state, because every state gives its own test. How grades work · Top-graded California public middle schools

Enrollment
563
Middle
DISTRICT 664 · STATE 659
Student : Teacher
18.5:1
30 FTE teachers
DISTRICT 20.7:1 · STATE 20.7:1
Free / Reduced Lunch
93%
521 students
DISTRICT 75% · STATE 65%
Community
6
0 members
Enrollment and student:teacher ratio compared against other middle schools. Free/Reduced Lunch and demographics compared against all schools.

Enrollment by grade, 2024-25

GradeStudentsShare
Grade 729352%
Grade 827048%
Student demographics
70%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 68% · STATE 62% · US 70%
White
326%
DISTRICT 16% · STATE 20% · US 43%
Hispanic
24944%
DISTRICT 49% · STATE 56% · US 30%
Black
9116%
DISTRICT 6% · STATE 5% · US 15%
Asian
14225%
DISTRICT 22% · STATE 12% · US 6%
Two+
387%
DISTRICT 5% · STATE 6% · US 5%
Native American
20%
DISTRICT 0% · STATE 0% · US 1%
Pacific Islander
71%
DISTRICT 1% · STATE 0% · US 0%
Student head counts by race/ethnicity from federal NCES enrollment data. District, state, and US figures are each group's share of all public school students in that area (US excludes territories). Very small groups may be suppressed in the source, so categories do not always sum exactly to total enrollment.
Gender split
Male
27649%
Female
28551%

Discussions

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Test scores

CAASPP 2024-25 . % met or exceeded standard
English Language Arts
26.7%
CA avg 49.1% . +6.7pp since 2014
Math
15.4%
CA avg 37.7% . +6.4pp since 2014

What this means: On the CAASPP, California's statewide test, about 27 of every 100 students at this school read and write at grade level and about 15 of 100 do math at grade level. Across all California schools, those numbers are about 49 and 38. Reading and writing scores are up about 7 points since 2014, while math scores are up about 6 points.

Performance levels, 2024-25

SubjectStandard ExceededStandard MetStandard Nearly MetStandard Not Met
English Language Arts4.1%22.6%27.6%45.7%
Math7.0%8.5%17.5%67.1%
Share of tested students at each CAASPP level. Each student counts in one level, so a row adds to about 100%.

CAASPP results by year

School yearEnglish Language ArtsMath
2024-2526.7%15.4%
2023-2420.3%9.9%
2022-2322.6%6.6%
2021-2224.0%7.8%
2020-2123.6%9.5%
2018-1927.5%11.4%
2017-1831.3%11.7%
2016-1729.3%11.9%
2015-1623.0%13.0%
2014-1520.0%9.0%
% met or exceeded standard, all students and all tested grades.
Source: CAASPP. All students, all grades. See all years and grades →

BeatsExpectations

Demographically-adjusted score · methodology
Tier
AS EXPECTED
Performing as predicted given the school's student profile
Actual proficiency
18.1%
composite math + reading, all grades
Predicted
25.3%
based on CA schools with similar FRL share
Beats by
-7.2pp
below demographic expectation

What this means: About 18% of students here test proficient in math and reading, compared with the roughly 25% typical for California schools with a similar share of low-income students. BeatsExpectations measures results against demographically similar schools rather than by raw scores, and this school falls within the typical range, neither among California's top nor bottom 10%.

BeatsExpectations runs a per-state regression of proficiency on free/reduced-lunch share, then scores each school by residual. How this is calculated →

Schools most like Delta Sierra Middle

Delta Sierra Middle's state test result (18.1% proficient) is higher than 1 of the 5 schools below with a result.

SchoolStudentsLow-incomeProficient
Delta Sierra Middle this school56392.5%18.1%
Roosevelt Middle
Oakland
51297.3%19.1%
Martin Luther King Jr. Technology Academy
Sacramento
50397.4%8.9%
Fern Bacon Middle
Sacramento
67987.6%25.4%
Norwood Junior High
Sacramento
45083.1%32.7%
Foothill Ranch Middle
Sacramento
50992.9%21.5%
Matched among California middle schools on enrollment, the share of students from low-income families (eligible for free or reduced-price lunch), and racial and ethnic makeup. Proficient is the average share of students meeting the state standard across all of the school's state tests in 2023-24 and 2024-25, the same combined score our test-score rankings use. Online schools and schools serving specialized populations are not matched.

Where Delta Sierra Middle ranks

Among middle schools
MeasureThis schoolIn CaliforniaIn San Joaquin County
State test proficiency
ranked highest first
18.1%#1,093 of 1,224#12 of 12
Math proficiency
ranked highest first
15.4%#1,012 of 1,227
▲ 105
#12 of 12
no change
Reading proficiency
ranked highest first
26.7%#1,064 of 1,227
▲ 76
#12 of 12
no change
3-year test score change
ranked biggest gain first
+5.2pp#292 of 1,214#5 of 12
Enrollment
ranked largest first
563#832 of 1,377#10 of 15
Students per teacher
ranked fewest first
18.5:1#268 of 1,279#1 of 14
Diversity index
ranked most diverse first
70.5%#128 of 1,278#2 of 14
Free and reduced lunch
ranked highest share first
92.5%#196 of 1,329#2 of 15
Enrollment change since 2017-18
ranked steepest decline first
-14.2%#528 of 930#4 of 9
Ranked against other public middle schools. Online schools are left out of every list, and test-score lists leave out schools that serve specialized populations. Each rank links to the full list. Arrows under a test-score rank show places moved since the prior test year, among schools tested both years.

4-year change

SY 2020-21 vs SY 2024-25
Enrollment
563
-25 (-4%) vs 2020
-37% since 1990-91, when it was 897
Student : Teacher
18.5:1
was 18.4:1
Source: NCES Common Core of Data

Enrollment and staffing by year

School yearStudentsTeachers (FTE)Students per teacherFree and reduced lunch
2024-2556330.418.5:193% (521)
2023-2457628.220.4:195% (545)
2022-235953019.8:193% (553)
2020-215883218.4:182% (485)
2017-1865629.522.2:187% (571)
2015-165963019.9:185% (507)
2010-11461N/AN/A82% (379)
2000-019664621.0:145% (436)
1990-918974320.9:1N/A
Source: NCES Common Core of Data. Rows are the federal collections on file for Delta Sierra Middle.

Since 2017-18: students down 14% (656 to 563); teachers up 3% (29.5 to 30.4).

About Delta Sierra Middle

In Stockton, California, Delta Sierra Middle is a mid-sized middle-grades school. Enrollment stands at 563 students, covering grades 7 through 8.

In Lodi Unified, 46 schools enroll a combined 27,047 students.

The largest racial or ethnic group at Delta Sierra Middle is Hispanic, with 44% of students. The next largest groups are 25% Asian, 16% Black, 7% multiracial, and 6% White. In San Joaquin County overall, the Hispanic share is about 43%. The diversity index for Delta Sierra Middle is 70%. For US public schools as a whole it is 70%.

The school lists 30.4 full-time-equivalent teachers and a student-to-teacher ratio of 18.5:1. The average for middle schools in California, 20.7:1, is higher. A total of 521 students, or 93%, are eligible for free or reduced-price lunch. Among public schools in San Joaquin County, the average eligibility rate is 66%.

Delta Sierra Middle holds a C- allk12 Grade, placing it above 20% of California public middle schools.

Compared with California schools that have similar shares of low-income students, Delta Sierra Middle's results are 7.2 points below predicted: 18.1% against 25.3%.

San Joaquin County is the school's county. There, the median household earns about $92,179 a year, a bachelor's degree or higher is held by about 23% of adults, and the share of residents below the poverty line is 10%. Public schools in San Joaquin County number 251, with about 153,026 students.

Plaza Robles Continuation High is about 0.2 miles away, making it the nearest public school. There are at least 8 more public schools inside five miles. Ranking the closest schools with test data puts Delta Sierra Middle at 6th of 7.

Its NCES locale code is City: Large: the school is inside a principal city with a population of 250,000 or more.

In 2020-21, Delta Sierra Middle enrolled 588 students. By 2024-25, that number had fallen to 563.

The Delta Sierra Middle discussion page is a place for special education services, counseling, and support programs. Teachers and staff are welcome to share updates too.

San Joaquin County at a glance

View full county profile
Population
797,334
Census ACS
Median income
$92,179
Household, ACS
Bachelor's+
23%
Adults 25+
Poverty rate
10%
Below federal line
Schools in county
251
153,026 students

Quick facts

School name
Delta Sierra Middle
District
Lodi Unified
Address
2255 Wagner Heights Rd., Stockton, CA 95209
Phone
(209) 953-8510
County
San Joaquin County
Level
Middle
Grade range
07–08
Total enrollment
563
Teachers (FTE)
30
Student–teacher ratio
18.5:1
Free and reduced lunch
521 (93%)
Locale
11-City: Large
NCES ID
062223009391
Charter school
No
Virtual school
No

Related schools

Other schools in Lodi Unified
Other schools in Stockton
Nearby schools

Frequently asked questions

About Delta Sierra Middle
How large is Delta Sierra Middle?
Delta Sierra Middle enrolls approximately 563 students in grades 07-08.
Is Delta Sierra Middle an elementary, middle, or high school?
Delta Sierra Middle is a middle school covering grades 07-08.
How many teachers does Delta Sierra Middle have?
Delta Sierra Middle employs 30 FTE teachers, for a student-to-teacher ratio of 18.5:1.
How diverse is Delta Sierra Middle?
Delta Sierra Middle reports a student body of 6% White, 44% Hispanic, 16% Black, 25% Asian, 7% Two or more.
Who oversees Delta Sierra Middle?
Delta Sierra Middle is overseen by Lodi Unified in San Joaquin County.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.
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