Enrollment
196
High
DISTRICT 131 · STATE 838
SCHOOL COMMUNITY·RIVER DELTA JOINT UNIFIED·NCES 063311005123
Delta High
52810 Netherlands Ave., Clarksburg, CA 95612 · (916) 744-1714 · Yolo County
GRADES 10–12HIGH41-RURALTITLE IREGULAR SCHOOL196 STUDENTS
D
allk12 Grade
Scored higher than 12% of California public high schools
- C-Test 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.
- CThree-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 high schools
Student : Teacher
15.8:1
12 FTE teachers
DISTRICT 10.8:1 · STATE 18.2:1
Free / Reduced Lunch
75%
147 students
DISTRICT 79% · STATE 65%
Community
0
0 members
Enrollment and student:teacher ratio compared against other high schools. Free/Reduced Lunch and demographics compared against all schools.
Enrollment by grade, 2024-25
| Grade | Students | Share |
|---|---|---|
| Grade 10 | 65 | 33% |
| Grade 11 | 63 | 32% |
| Grade 12 | 68 | 35% |
Student demographics
43%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 56% · STATE 62% · US 70%
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
School pathway
Feeds from
Based on grade levels within River Delta Joint Unified. Attendance zones can vary; confirm enrollment with the district.
Test scores
CAASPP 2024-25 . % met or exceeded standardEnglish Language Arts
35.5%
CA avg 49.1% . -31.5pp since 2014
Math
9.8%
CA avg 37.7% . -23.2pp since 2014
What this means: On the CAASPP, California's statewide test, about 35 of every 100 students at this school read and write at grade level and about 10 of 100 do math at grade level. Across all California schools, those numbers are about 49 and 38. Reading and writing scores are down about 32 points since 2014, while math scores are down about 23 points.
Performance levels, 2024-25
| Subject | Standard Exceeded | Standard Met | Standard Nearly Met | Standard Not Met |
|---|---|---|---|---|
| English Language Arts | 9.7% | 25.8% | 40.3% | 24.2% |
| Math | 0.0% | 9.8% | 18.0% | 72.1% |
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 year | English Language Arts | Math |
|---|---|---|
| 2024-25 | 35.5% | 9.8% |
| 2023-24 | 47.7% | 13.6% |
| 2022-23 | 53.3% | 4.5% |
| 2021-22 | 43.0% | 10.1% |
| 2018-19 | 63.3% | 21.7% |
| 2017-18 | 60.4% | 22.9% |
| 2016-17 | 63.6% | 20.0% |
| 2015-16 | 54.0% | 26.0% |
| 2014-15 | 67.0% | 33.0% |
% 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 · methodologyTier
AS EXPECTED
Performing as predicted given the school's student profile
Actual proficiency
26.7%
composite math + reading, all grades
Predicted
35.6%
based on CA schools with similar FRL share
Beats by
-8.9pp
below demographic expectation
What this means: About 27% of students here test proficient in math and reading, compared with the roughly 36% 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 High
| School | Students | Low-income | Proficient |
|---|---|---|---|
| Delta High this school | 196 | 75.0% | 26.7% |
| Mission View Public Santa Clarita | 255 | 73.7% | N/A |
| Altus Schools North County Escondido | 149 | 76.5% | N/A |
| Options for Youth San Gabriel San Gabriel | 244 | 77.5% | N/A |
| Altus Schools Mirus Charter Hesperia | 292 | 73.6% | N/A |
| Tomales High Tomales | 127 | 73.2% | 32.7% |
Matched among California high 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 High ranks
Among high schools| Measure | This school | In California | In Yolo County |
|---|---|---|---|
| State test proficiency ranked highest first | 26.7% | #893 of 1,052 | #9 of 9 |
| Math proficiency ranked highest first | 9.8% | #968 of 1,056 ▼ 169 | #9 of 9 ▼ 1 |
| Reading proficiency ranked highest first | 35.5% | #950 of 1,056 ▼ 244 | #9 of 9 ▼ 1 |
| 3-year test score change ranked biggest drop first | -3.9pp | #173 of 1,044 | #1 of 9 |
| Enrollment ranked largest first | 196 | #1,362 of 2,093 | #8 of 16 |
| Free and reduced lunch ranked highest share first | 75.0% | #747 of 1,575 | #4 of 10 |
Ranked against other public high 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 2024-25Enrollment
196
-38 (-16%) vs 2020
-28% since 1990-91, when it was 274
Student : Teacher
15.8:1
was 21.3:1
Source: NCES Common Core of Data
Enrollment and staffing by year
| School year | Students | Teachers (FTE) | Students per teacher | Free and reduced lunch |
|---|---|---|---|---|
| 2024-25 | 196 | 12.4 | 15.8:1 | 75% (147) |
| 2023-24 | 183 | 11.4 | 16.1:1 | 69% (127) |
| 2022-23 | 203 | 13.1 | 15.6:1 | 51% (104) |
| 2020-21 | 234 | 11 | 21.3:1 | 46% (107) |
| 2017-18 | 164 | 10.3 | 15.9:1 | 58% (95) |
| 2015-16 | 213 | 3 | 71.0:1 | 51% (109) |
| 2010-11 | 137 | N/A | N/A | N/A |
| 2000-01 | 299 | 16 | 18.7:1 | 36% (107) |
| 1990-91 | 274 | 17 | 16.1:1 | N/A |
Source: NCES Common Core of Data. Rows are the federal collections on file for Delta High.
Since 2017-18: students up 20% (164 to 196); teachers up 20% (10.3 to 12.4).
About Delta High
Clarksburg, California, is home to Delta High, a very small high school. Students in grades 10 through 12 make up the school's enrollment of 196 students. That compares with an average of about 838 students for high schools in California.
River Delta Joint Unified, which runs Delta High, has 11 schools and 1,705 students.
Hispanic students are 72% of those enrolled at Delta High. Next come 20% White and 4% multiracial. That compares with about 33% Hispanic among all Yolo County residents. A diversity index of 43% means there is a 43% chance two randomly chosen students at Delta High are from different groups.
With 12.4 full-time-equivalent teachers, the student-to-teacher ratio is about 15.8:1. The average for high schools in California is 18.2:1, so this school has fewer students per teacher. Student poverty is often measured by lunch eligibility; at Delta High, 75% qualify for free or reduced-price lunch. It compares with 59% for public schools in Yolo County.
Among California public high schools, Delta High outscored 12%, which works out to a D on the allk12 Grade.
The school's average proficiency rate across its state test results is 26.7%. For its free or reduced-price lunch share, the predicted value is 35.6%.
In Yolo County, the median household earns about $91,752 a year, the share of adults with a bachelor's degree or higher is 45%, and roughly 8% of residents are in poverty. Across Yolo County, 67 public schools serve about 29,820 students.
Delta High's nearest public school is Clarksburg Middle (about 0.1 miles). There are at least 8 more public schools inside five miles. On state test proficiency, Delta High ranks 6th in a group of 7 nearby schools.
Under the NCES locale system, Delta High is Rural: Fringe.
In 2024-25, the school enrolled 196, down from 234 in 2020-21. Over the same period, the student-to-teacher ratio dropped to 15.8:1, from 21.3:1.
Delta High has a community page on allk12 for topics such as athletics, class schedules, and weather closures. Teachers and staff are welcome to share updates too.
Yolo County at a glance
View full county profilePopulation
220,564
Census ACS
Median income
$91,752
Household, ACS
Bachelor's+
45%
Adults 25+
Poverty rate
8%
Below federal line
Schools in county
67
29,820 students
Quick facts
Related schools
Other schools in River Delta Joint Unified
- D. H. White ElementaryElementary · 432 students
- Rio Vista HighHigh · 317 students
- Isleton ElementaryElementary · 188 students
- Clarksburg MiddleMiddle · 171 students
- Riverview MiddleMiddle · 160 students
- Walnut Grove ElementaryElementary · 131 students
Other schools in Clarksburg
- Delta Elementary CharterElementary · 325 students
- Clarksburg MiddleMiddle · 171 students
Other Delta High schools
6 other US public schools in 5 states are named Delta High. Delta High is the 5th largest of the 7.
- Delta HighSanta Maria, CA · 291 students
- Delta High SchoolMuncie, IN · 848 students
- Delta High SchoolDELTA, CO · 626 students
- Delta HighDELTA, UT · 592 students
- DELTA HIGHDELTA, MO · 117 students
Nearby schools
- Clarksburg Middle0.1 mi · 171
- Delta Elementary Charter0.1 mi · 325
- Joseph Sims Elementary3.2 mi · 691
- Elliott Ranch Elementary3.3 mi · 599
- Stone Lake Elementary3.7 mi · 690
- SAVA - Sacramento Academic and Vocational Academy - EGUSD3.8 mi · 360
Frequently asked questions
About Delta HighHow many students attend Delta High?
Delta High enrolls approximately 196 students in grades 10-12.
What grades does Delta High serve?
Delta High serves grades 10-12.
How many students per teacher at Delta High?
Approximately 15.8:1 students per teacher at Delta High.
What is the student diversity at Delta High?
Student demographics at Delta High are roughly 20% White, 72% Hispanic, 2% Black, 1% Asian, 4% Two or more.
Who oversees Delta High?
Delta High is overseen by River Delta Joint Unified in Yolo County.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.