Rio Vista High School is a public high school located in the city of Rio Vista, California. The school is in the River Delta Unified School District.
Serving 317 students in grades 9-12, Rio Vista 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 10-14% (which is lower than the California state average of 34%). The percentage of students achieving proficiency in reading/language arts is 45-49% (which is approximately equal to the California state average of 47%).
The student-teacher ratio of 17:1 is lower than the California state level of 21:1.
Minority enrollment is 66% of the student body (majority Hispanic), which is lower than the California state average of 80% (majority Hispanic).
Quick Facts (2026)
- Grades: 9-12
- Enrollment: 317 students
- Student-Teacher Ratio: 17:1
- Minority Enrollment: 66%
- Graduation Rate: ≥95% (Top 20% in CA)
- Overall Testing Rank: Bottom 50%
- Math Proficiency: 10-14% (Btm 50%)
- Reading Proficiency: 45-49% (Top 50%)
- Science Proficiency: 20-24% (Btm 50%)
- Source: National Center for Education Statistics (NCES), CA Dept. of Education
Top Rankings
Rio Vista High School ranks among the top 20% of public schools in California for:
Category
Attribute
Graduation Rate
Student Attention
School Overview
Rio Vista High School's student population of 317 students has declined by 18% over five school years.
The teacher population of 19 teachers has declined by 20% over five school years.
Grades Offered
Grades 9-12
Total Students
317 students
Total Classroom Teachers
19 teachers
Year Founded
1967
Campus Size
40 acres
Average Class Size
15 students
School Rankings
Rio Vista 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 Rio Vista High School is 0.61, 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
#6119 out of 9523 schools
(Bottom 50%)
(Bottom 50%)
Math Test Scores (% Proficient)
10-14%
34%
Reading/Language Arts Test Scores (% Proficient)
45-49%
47%
Science Test Scores (% Proficient)
20-24%
29%
Student-Teacher Ratio
17:1
21:1
American Indian
1%
1%
Asian
2%
12%
Hispanic
52%
56%
Black
2%
5%
White
34%
20%
Hawaiian
1%
n/a
Two or more races
8%
6%
All Ethnic Groups
Graduation Rate
≥95%
87%
Eligible for Free Lunch
62%
54%
Eligible for Reduced Lunch
10%
8%
School Statewide Testing
School District Name
Source: National Center for Education Statistics (NCES), CA Dept. of Education
School Notes
- School Mascot: Rams
Frequently Asked Questions
What is Rio Vista High School's ranking?
Rio Vista High School is ranked #6119 out of 9,523 schools, which ranks it among the bottom 50% of public schools in California.
What percent of students have achieved state testing proficiency in math and reading?
10-14% of students have achieved math proficiency (compared to the 34% CA state average), while 45-49% of students have achieved reading proficiency (compared to the 47% CA state average).
What is the graduation rate of Rio Vista High School?
The graduation rate of Rio Vista High School is 95%, which is higher than the California state average of 87%.
How many students attend Rio Vista High School?
317 students attend Rio Vista High School.
What is the racial composition of the student body?
52% of Rio Vista High School students are Hispanic, 34% of students are White, 8% of students are Two or more races, 2% of students are Asian, 2% of students are Black, 1% of students are American Indian, and 1% of students are Hawaiian.
What is the student-teacher ratio of Rio Vista High School?
Rio Vista High School has a student ration of 17:1, which is lower than the California state average of 21:1.
What grades does Rio Vista High School offer ?
Rio Vista High School offers enrollment in grades 9-12
What school district is Rio Vista High School part of?
Rio Vista High School is part of River Delta Joint Unified School District.
School Reviews
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