Serving 256 students in grades Kindergarten-8, Jcs - Mountain Oaks ranks in the top 10% of all schools in California for overall test scores (math proficiency is top 10%, and reading proficiency is top 10%).
The percentage of students achieving proficiency in math is 65-69% (which is higher than the California state average of 34%). The percentage of students achieving proficiency in reading/language arts is 80-84% (which is higher than the California state average of 47%).
The student-teacher ratio of 20:1 is lower than the California state level of 21:1.
Minority enrollment is 32% of the student body (majority Hispanic and Asian), which is lower than the California state average of 80% (majority Hispanic).
Quick Facts (2026)
- School Type: Charter School
- Grades: Kindergarten-8
- Enrollment: 256 students
- Student-Teacher Ratio: 20:1
- Minority Enrollment: 32%
- Overall Testing Rank: Top 10% in CA
- Math Proficiency: 65-69% (Top 10%)
- Reading Proficiency: 80-84% (Top 5%)
- Science Proficiency: 50-59% (Top 20%)
- Source: National Center for Education Statistics (NCES), CA Dept. of Education
Top Rankings
Jcs - Mountain Oaks ranks among the top 20% of public schools in California for:
Category
Attribute
Overall Rank
Math Proficiency
Reading/Language Arts Proficiency
Science Proficiency
School Overview
Jcs - Mountain Oaks's student population of 256 students has declined by 8% over five school years.
The teacher population of 13 teachers has stayed relatively flat over five school years.
School Type
Grades Offered
Grades Kindergarten-8
Total Students
256 students
Gender %
Total Classroom Teachers
13 teachers
School Rankings
Jcs - Mountain Oaks ranks within the top 10% of all 9,523 schools in California (based off of combined math and reading proficiency testing data).
The diversity score of Jcs - Mountain Oaks is 0.51, 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
#518 out of 9523 schools
(Top 10%)
(Top 10%)
Math Test Scores (% Proficient)
65-69%
34%
Reading/Language Arts Test Scores (% Proficient)
80-84%
47%
Science Test Scores (% Proficient)
50-59%
29%
Student-Teacher Ratio
20:1
21:1
American Indian
n/a
1%
Asian
8%
12%
Hispanic
9%
56%
Black
1%
5%
White
68%
20%
Hawaiian
n/a
n/a
Two or more races
14%
6%
All Ethnic Groups
Eligible for Free Lunch
21%
54%
Eligible for Reduced Lunch
2%
8%
School Statewide Testing
School District Name
Source: National Center for Education Statistics (NCES), CA Dept. of Education
Frequently Asked Questions
What is Jcs - Mountain Oaks's ranking?
Jcs - Mountain Oaks is ranked #518 out of 9,523 schools, which ranks it among the top 10% of public schools in California.
What percent of students have achieved state testing proficiency in math and reading?
65-69% of students have achieved math proficiency (compared to the 34% CA state average), while 80-84% of students have achieved reading proficiency (compared to the 47% CA state average).
How many students attend Jcs - Mountain Oaks?
256 students attend Jcs - Mountain Oaks.
What is the racial composition of the student body?
68% of Jcs - Mountain Oaks students are White, 14% of students are Two or more races, 9% of students are Hispanic, 8% of students are Asian, and 1% of students are Black.
What is the student-teacher ratio of Jcs - Mountain Oaks?
Jcs - Mountain Oaks has a student ration of 20:1, which is lower than the California state average of 21:1.
What grades does Jcs - Mountain Oaks offer ?
Jcs - Mountain Oaks offers enrollment in grades Kindergarten-8
What school district is Jcs - Mountain Oaks part of?
Jcs - Mountain Oaks is part of Jcs - Mountain Oaks School District.
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