Delta High School is a four-year public high school in Clarksburg, California, United States. It is part of the River Delta Unified School District. It is co-located in the same facility and shares a principal with Clarksburg Middle School. The combined enrollment for both schools is approximately 460 as of 2022.
Serving 196 students in grades 10-12, Delta High School ranks in the bottom 50% of all schools in California for overall test scores (math proficiency is bottom 50%, and reading proficiency is bottom 50%).
The percentage of students achieving proficiency in math is ≤10% (which is lower than the California state average of 34%). The percentage of students achieving proficiency in reading/language arts is 40-44% (which is lower than the California state average of 47%).
The student-teacher ratio of 16:1 is lower than the California state level of 21:1.
Minority enrollment is 80% of the student body (majority Hispanic), which is equal to the California state average of 80% (majority Hispanic).
Quick Facts (2026)
- Grades: 10-12
- Enrollment: 196 students
- Student-Teacher Ratio: 16:1
- Minority Enrollment: 80%
- Graduation Rate: ≥95% (Top 20% in CA)
- Overall Testing Rank: Bottom 50%
- Math Proficiency: ≤10% (Btm 50%)
- Reading Proficiency: 40-44% (Top 50%)
- Science Proficiency: 20-29% (Top 50%)
- Source: National Center for Education Statistics (NCES), CA Dept. of Education
Top Rankings
Delta High School ranks among the top 20% of public schools in California for:
Category
Attribute
Graduation Rate
Community Size
Student Attention
School Overview
Delta High School's student population of 196 students has declined by 16% over five school years.
The teacher population of 12 teachers has stayed relatively flat over five school years.
Grades Offered
Grades 10-12
Total Students
196 students
Total Classroom Teachers
12 teachers
Year Founded
1967
School Motto
In a diverse community, rich in agricultural and family traditions, the River Delta Unified School District will provide a safe, supportive, rigorous, student-centered education in which all students are prepared to achieve their maximum potential and bec
Average Class Size
20 students
School Rankings
Delta High School ranks within the bottom 50% of all 9,523 schools in California (based off of combined math and reading proficiency testing data).
The diversity score of Delta High School is 0.44, which is less than the diversity score at state average of 0.63. The school's diversity has stayed relatively flat over five school years.
Overall Testing Rank
#6852 out of 9523 schools
(Bottom 50%)
(Bottom 50%)
Math Test Scores (% Proficient)
≤10%
34%
Reading/Language Arts Test Scores (% Proficient)
40-44%
47%
Science Test Scores (% Proficient)
20-29%
29%
Student-Teacher Ratio
16:1
21:1
American Indian
1%
1%
Asian
1%
12%
Hispanic
72%
56%
Black
2%
5%
White
20%
20%
Hawaiian
n/a
n/a
Two or more races
4%
6%
All Ethnic Groups
Graduation Rate
≥95%
87%
Eligible for Free Lunch
61%
54%
Eligible for Reduced Lunch
14%
8%
School Statewide Testing
School District Name
River Delta Joint Unified School District
Source: National Center for Education Statistics (NCES), CA Dept. of Education
School Notes
- School Mascot: Saint
Frequently Asked Questions
What is Delta High School's ranking?
Delta High School is ranked #6852 out of 9,523 schools, which ranks it among the bottom 50% of public schools in California.
What schools are Delta High School often compared to?
Delta High Schoolis often viewed alongside schools like River City High School, Davis Senior High School by visitors of our site.
What percent of students have achieved state testing proficiency in math and reading?
≤10% of students have achieved math proficiency (compared to the 34% CA state average), while 40-44% of students have achieved reading proficiency (compared to the 47% CA state average).
What is the graduation rate of Delta High School?
The graduation rate of Delta High School is 95%, which is higher than the California state average of 87%.
How many students attend Delta High School?
196 students attend Delta High School.
What is the racial composition of the student body?
72% of Delta High School students are Hispanic, 20% of students are White, 4% of students are Two or more races, 2% of students are Black, 1% of students are American Indian, and 1% of students are Asian.
What is the student-teacher ratio of Delta High School?
Delta High School has a student ration of 16:1, which is lower than the California state average of 21:1.
What grades does Delta High School offer ?
Delta High School offers enrollment in grades 10-12
What school district is Delta High School part of?
Delta High School is part of River Delta Joint Unified School District.
School Reviews
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