For the 2025-26 school year, there are 6 public high schools serving 756 students in River Delta Joint Unified School District. This district's average high testing ranking is 3/10, which is in the bottom 50% of public high schools in California.
ºÚÁÏÍø¹ÙÍø High Schools in River Delta Joint Unified School District have an average math proficiency score of 12% (versus the California public high school average of 28%), and reading proficiency score of 37% (versus the 51% statewide average).
ºÚÁÏÍø¹ÙÍø High School in River Delta Joint Unified School District have a Graduation Rate of 92%, which is more than the California average of 86%.
The school with highest graduation rate is Delta High School, with ≥95% graduation rate. Read more about public school graduation rate statistics in California or national school graduation rate statistics.
Minority enrollment is 72% of the student body (majority Hispanic), which is less than the California public high school average of 79% (majority Hispanic).
Overview
This School District
This State (CA)
# Schools
11 Schools
2,814 Schools
# Students
1,747 Students
2,138,919 Students
# Teachers
93 Teachers
100,723 Teachers
Student-Teacher Ratio
19:1
19:1
Student By Grade
District Rank
River Delta Joint Unified School District, which is ranked #1240 of all 1,908 school districts in California (based off of combined math and reading proficiency testing data) for the 2022-2023 school year.
The school district's graduation rate of 95% has increased from 90-94% over five school years.
Overall District Rank
#1196 out of 1932 school districts
(Bottom 50%)
(Bottom 50%)
Math Test Scores (% Proficient)
20%
34%
Reading/Language Arts Test Scores (% Proficient)
40%
47%
Science Test Scores (% Proficient)
25%
29%
Graduation Rate
(21-22)≥95%
87%
Students by Ethnicity:
Diversity Score
0.57
0.63
% American Indian
1%
1%
% Asian
2%
11%
% Hispanic
59%
56%
% Black
2%
5%
% White
29%
22%
% Hawaiian
1%
n/a
% Two or more races
6%
5%
All Ethnic Groups
District Revenue and Spending
The revenue/student of $17,155 in this school district is less than the state median of $19,978. The school district revenue/student has grown by 7% over four school years.
The school district's spending/student of $14,912 is less than the state median of $18,399. The school district spending/student has grown by 7% over four school years.
Total Revenue
$30 MM
$116,387 MM
Spending
$26 MM
$107,188 MM
Revenue / Student
$17,155
$19,978
Spending / Student
$14,912
$18,399
Best River Delta Joint Unified School District ºÚÁÏÍø¹ÙÍø High Schools (2025-26)
School
(Math and Reading Proficiency)
(Math and Reading Proficiency)
Location
Quick Facts
Rank: #11.
Mokelumne High (Continuation School)
Alternative School
(Math: <50% | Reading: <50% )
Rank:
Rank:
7/
Top 50%10
160 Courtland High School Ln.
Courtland, CA 95615
(916) 775-1771
Courtland, CA 95615
(916) 775-1771
Gr: 9-12 | 8 students Student-teacher ratio: 8:1
Rank: #22.
River Delta High/elementary (Alternative)
Alternative School
(Math: ≤20% | Reading: <50%)
Rank:
Rank:
5/
Bottom 50%10
525 So. Second St.
Courtland, CA 95615
(707) 374-1324
Courtland, CA 95615
(707) 374-1324
Gr: K-12 | 26 students Student-teacher ratio: 13:1 Minority enrollment: 58%
Rank: #33.
Rio Vista High School
(Math: 10-14% | Reading: 45-49%)
Rank:
Rank:
4/
Bottom 50%10
410 South Fourth St.
Rio Vista, CA 94571
(707) 374-6336
Rio Vista, CA 94571
(707) 374-6336
Gr: 9-12 | 350 students Student-teacher ratio: 17:1 Minority enrollment: 63%
Rank: #44.
Delta High School
(Math: ≤10% | Reading: 40-44%)
Rank:
Rank:
3/
Bottom 50%10
52810 Netherlands Ave.
Clarksburg, CA 95612
(916) 744-1714
Clarksburg, CA 95612
(916) 744-1714
Gr: 10-12 | 183 students Student-teacher ratio: 17:1 Minority enrollment: 72%
Rank: #55.
Clarksburg Middle School
(Math: 10-14% | Reading: 25-29%)
Rank:
Rank:
2/
Bottom 50%10
52870 Netherlands Rd.
Clarksburg, CA 95612
(916) 744-1717
Clarksburg, CA 95612
(916) 744-1717
Gr: 7-9 | 187 students Student-teacher ratio: 19:1 Minority enrollment: 88%
Rank: n/an/a
River Delta Community Day
Alternative School
160 Courtland High School Ln.
Courtland, CA 95615
(916) 775-1771
Courtland, CA 95615
(916) 775-1771
Gr: 7-12 | 2 students Student-teacher ratio: 2:1
Recent Articles

Texas Schools Enrollment Trends & Policy in 2025
Latest data and policy changes on Texas public school enrollment growth, funding, and virtual education in 2025.

Financial Aid & Hidden Costs in ºÚÁÏÍø¹ÙÍø Schools
Learn about financial aid and hidden costs in public schools. Discover what parents should budget for beyond tuition-free education.

NYC Schools Still Most Segregated in 2025
Despite reforms, New York City schools remain the most segregated in the U.S. in 2025. Here’s what parents and educators need to know.