Below Average
#8736 of 9,533 schools in CA
Mountain Oaks
School · Calaveras County Office of Education
PO Box 1209, San Andreas, CA 95249
Enrollment
398
Student-Teacher
56.9:1
Score
4.2
Grades
Kindergarten – 12th
Enrollment
398
Student-Teacher
56.9:1
Score
4.2
Grades
Kindergarten – 12th
Updated
2022-23
Updated 2022-23
How this school compares
In San Andreas
#2 of 5
public schools
California schools
#438 of 475
About Mountain Oaks
Mountain Oaks is a charter school located in the rural area of San Andreas, California, within Calaveras County. The school serves students from kindergarten through 12th grade with an enrollment of 398 students and has a student-to-teacher ratio of 56.9:1, managed by seven full-time equivalent teachers. Mountain Oaks currently holds a MySchoolScout rating of 3.4 out of 10, ranking in the 16th percentile among California schools.
The academic performance is marked with an average ELA/Reading proficiency rate of 35% and a math proficiency rate of 19%, indicating areas for improvement but also highlighting potential for growth. The rural setting provides a close-knit community atmosphere where students can receive personalized attention despite the challenging student-to-teacher ratio. Mountain Oaks focuses on fostering a supportive environment that encourages continuous development in both academic and personal skills.
Mountain Oaks is situated within a serene, rural landscape in San Andreas, offering a unique backdrop for learning and growth.
What Parents Should Know
The student-teacher ratio at Mountain Oaks is 56.9:1, which is higher than the national average. This may mean larger class sizes, so parents should ask about classroom support, teaching assistants, and how the school differentiates instruction for students who need extra help.
Mountain Oaks is a charter school — a publicly funded school that operates with more autonomy than traditional district schools. Charter schools often have distinct educational models or specialties. Parents should understand the school's specific mission, enrollment process, and how its approach differs from nearby district options.
Located in a rural area, Mountain Oaks may involve longer commutes for some families. Rural schools often serve as community anchors and may have smaller class sizes, but parents should consider transportation logistics, after-school program availability, and access to specialized services.
Score Breakdown
Partial Profile · 3/4 metricsView breakdown
View breakdown
Data not available for this school
View breakdown
Mountain Oaks — Students at Mountain Oaks score 26% proficient, which is below what's typical for similar communities (expected: 43%).
Equity & Diversity
Shown separately, not included in overall scoreFree/Reduced Lunch
56.8%
Students qualifying for federal meal assistance
Component weights adjusted due to data availability.
Test Scores CA CAASPP (2023-24)
Based on 20 test records from CA state assessments. About our data
Proficiency Trend
↓ DecliningAverage proficiency (% at or above grade level) across Math & ELA over time.
* COVID-affected year — test participation was uneven nationwide. This data is weighted at 50% in the Growth score calculation.
Source: EdFacts (NCES) and state assessment data. Growth score: 5.8/10.
How Mountain Oaks Compares
See how Mountain Oaks performs across key quality dimensions compared to state benchmarks.
Funding & Resources
Performance Trends
Math proficiency has remained stable from 20% (2019) to 18.84% (2024). Reading/ELA proficiency has declined from 42% (2019) to 34.15% (2024).
Location
PO Box 1209, San Andreas, CA 95249
Nearby Alternatives
Families considering Mountain Oaks may also want to explore other schools in the area. Jenny Lind Elementary (rated 6.5/10, 10.2 miles away, in nearby Valley Springs), which scores notably higher. Another option is Jackson Junior High (rated 5.8/10, 12.3 miles away, in nearby Jackson), which scores notably higher. Additionally, Mokelumne Hill Elementary (rated 5.5/10, 7.6 miles away, in nearby Mokelumne Hill), which scores notably higher. For more schools in San Andreas, see our San Andreas schools guide .
Nearby Schools
20 within 10.9 mi| School | Distance | Rating |
|---|---|---|
| Calaveras River Academy San Andreas | 0.0 mi | — |
| Calaveras High San Andreas | 0.9 mi | 3.6 |
| Gold Strike High San Andreas | 0.9 mi | 3.9 |
| Calaveras Unified Alternative-Sierra Hills Education Center San Andreas | 0.9 mi | 3.2 |
| San Andreas Elementary San Andreas | 1.1 mi | 4.9 |
| Oakendell Community San Andreas | 3.7 mi | — |
| Toyon Middle Valley Springs | 3.9 mi | 3.8 |
| Mokelumne Hill Elementary Mokelumne Hill | 7.6 mi | 5.5 |
| Valley Springs Elementary Valley Springs | 7.7 mi | 4.6 |
| Rite of Passage Placerville | 8.5 mi | — |
| Calaveras County Special Education (SELPA) Angels Camp | 10.5 mi | — |
| Bret Harte Union High Altaville | 10.7 mi | 4.5 |
| Vallecito Continuation High Angels Camp | 10.7 mi | 3.6 |
| Jackson Elementary Jackson | 12.0 mi | 3.5 |
| Mark Twain Elementary Angels Camp | 11.0 mi | 2.1 |
| Jenny Lind Elementary Valley Springs | 10.2 mi | 6.5 |
| Learners Empowered Academic Progress (LEAP) Angels Camp | 11.1 mi | — |
| Amador County Special Education Jackson | 12.3 mi | — |
| Jackson Junior High Jackson | 12.3 mi | 5.8 |
| BOONES Academy Valley Springs | 10.9 mi | — |
Neighborhood Census ACS (2019-2023)
Census data for ZIP 95249 (ACS 2019-2023 5-Year Estimates) · Data sources
Median Income
$46,864
Median Home Value
$409,000
Median Rent
$1,390/mo
Population
4,696
College Educated
22.8%
Homeownership
72.8%
Poverty Rate
32.3%
Median Age
57.8
Community Profile
The community surrounding Mountain Oaks has a median household income of $46,864. It is a community where 23% of adults hold a bachelor's degree or higher. The median home value in the area is $409,000, with a median rent of $1,390/month. The area has a poverty rate of 32.3%, indicating some economic challenges in the community. Source: U.S. Census ACS 2022 5-Year Estimates.
Similar Schools
Schools in the same state with comparable level, size, and ratings
| School | Rating |
|---|---|
| 21st Century Learning Institute Beaumont, CA | 4.2 |
| Circle of Independent Learning Fremont, CA | 4.2 |
| Pivot Charter School - North Bay Santa Rosa, CA | 4.2 |
| Avalon K-12 Avalon, CA | 4.3 |
| Butterfield Charter Porterville, CA | 4.3 |
| High Desert Premier Academy Apple Valley, CA | 4.3 |
Frequently Asked Questions
Common questions about Mountain Oaks
What grades does Mountain Oaks serve?
Mountain Oaks serves students in grades Kindergarten through 12th.
How many students attend Mountain Oaks?
Mountain Oaks has an enrollment of approximately 398 students.
What is the student-teacher ratio at Mountain Oaks?
The student-teacher ratio at Mountain Oaks is 56.9:1. A lower ratio generally means more individual attention per student. The national average is approximately 16:1 for public schools.
How does Mountain Oaks rank in CA?
Mountain Oaks is ranked #8736 out of 9,533 schools in CA.
What is Mountain Oaks's MySchoolScout rating?
Mountain Oaks has a composite rating of 4.2 out of 10 on MySchoolScout. This score combines academic performance, student growth, and school environment into a single score. Equity data is shown separately for context.
What are the test scores at Mountain Oaks?
Based on the most recent state assessment data, Mountain Oaks has 19.2% math proficiency and 35.3% reading/ELA proficiency.
Is Mountain Oaks a charter school?
Yes, Mountain Oaks is a charter school. Charter schools are publicly funded but independently operated, often with more flexibility in curriculum and teaching methods.
Is Mountain Oaks a Title I school?
No, Mountain Oaks is not currently a Title I school.
What does the Free & Reduced Lunch percentage mean for Mountain Oaks?
56.8% of students at Mountain Oaks qualify for free or reduced-price lunch. This is a commonly used indicator of economic need and provides important context when interpreting test scores.
Neighborhood Context
- County Safety
- Elevated (1,270/100K)
FBI UCR 2024. County-level only. Data >1 year old.
Quick Facts NCES CCD (SY 2022-23)
- Grades
- Kindergarten – 12th
- Enrollment
- 398
- Student-Teacher Ratio
- 56.9:1
- Teachers (FTE)
- 7
- Free/Reduced Lunch
- 56.8%
- Type
- regular
- Setting
- Distant Rural
- County
- Calaveras County
- Phone
- (888) 686-6257
- Data Year
- 2023–2024
Resources & Links
District
Calaveras County Office of Education- District Enrollment
- 438
- Schools in District
- 4
- Per-Pupil Spending
- $45,512
- District Rank
- #1 of 1
Other Schools in This District
How We Rate Schools
Every school receives a composite score from 1 to 10 based on four pillars: Academic Performance (50%), Student Growth (20%), Equity (15%), and Learning Environment (15%). Scores are built from publicly available data including standardized test results, enrollment figures, and school climate indicators.
Read our full methodologyRelated reading
- Best Elementary Schools in America: 2026 Rankingsbest schools
- Best Public Schools in California 2026: Top-Ranked Elementary, Middle & High Schoolsbest schools
- Best School Districts to Move To in 2026: A Data-Driven Guidebest schools
- Best Schools in Los Angeles, CA — 2026 Rankingsbest schools
- Best Schools in San Diego, CA — 2026 Rankingsbest schools
Get school insights in your inbox
New rankings, best-schools lists, and parent guides — delivered free. No spam, unsubscribe anytime.
We respect your privacy. Unsubscribe at any time.