Average
#4318 of 9,533 schools in CA
Top 45% in state
Jcs - Mountain Oaks
Elementary School · JCS - Mountain Oaks District
539 Encinitas Blvd., Encinitas, CA 92024
Enrollment
256
Student-Teacher
21.3:1
Score
6.5
Grades
Kindergarten – 8th
Enrollment
256
Student-Teacher
21.3:1
Score
6.5
Grades
Kindergarten – 8th
Updated
2022-23
Updated 2022-23
How this school compares
In Encinitas
#13 of 16
public schools
California elementary schools
#2,713 of 5,817
Equity
8.9 / 10
Exceptional
About Jcs - Mountain Oaks
JCS - Mountain Oaks serves 256 students from kindergarten through eighth grade as a charter elementary school in Encinitas, California. With 12 full-time equivalent teachers, the school maintains a 21.3:1 student-teacher ratio while delivering strong academic results that place it among the top performers in the state. The school earns an impressive 8.3 out of 10 rating and ranks #700 out of 9,566 California schools, placing it in the 93rd percentile statewide.
Students demonstrate solid academic achievement with 69% reaching proficiency or above in English Language Arts and 64% meeting or exceeding standards in mathematics. These results reflect the school's commitment to providing quality education in its charter school environment. JCS - Mountain Oaks draws families from a well-educated community where 65% of residents hold bachelor's degrees or higher and the median household income reaches $141,329.
The surrounding 92024 zip code area maintains a low poverty rate of 5.4% and features a median home value of $1,299,800, indicating a stable, affluent neighborhood that values educational investment. Located on Encinitas Boulevard in this charming small city setting, the school benefits from being part of San Diego County's coastal community, where families prioritize academic excellence and community engagement.
What Parents Should Know
The student-teacher ratio at Jcs - Mountain Oaks is 21.3:1, 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.
Jcs - 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.
Score Breakdown
Full Profile · 3/3 metricsView breakdown
View breakdown
Data not available for this school
View breakdown
Jcs - Mountain Oaks — Students at Jcs - Mountain Oaks score 67% proficient, which is above what's typical for similar communities (expected: 62%).
Equity & Diversity
Shown separately, not included in overall scoreFree/Reduced Lunch
23%
Students qualifying for federal meal assistance
Test Scores CA CAASPP (2023-24)
Based on 18 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: 5.6/10.
How Jcs - Mountain Oaks Compares
See how Jcs - Mountain Oaks performs across key quality dimensions compared to state benchmarks.
Funding & Resources
Performance Trends
Math proficiency has declined from 70% (2019) to 64.58% (2024). Reading/ELA proficiency has declined from 75% (2019) to 69.27% (2024).
Location
539 Encinitas Blvd., Encinitas, CA 92024
Nearby Alternatives
Families considering Jcs - Mountain Oaks may also want to explore other elementary schools in the area. Cardiff Elementary (rated 8.3/10, 1.4 miles away, in nearby Cardiff-By-The-Sea), which scores notably higher. Another option is Flora Vista Elementary (rated 7.6/10, 1.7 miles away), which scores notably higher. Additionally, Ada W. Harris Elementary (rated 7.5/10, 1.0 miles away, in nearby Cardiff-By-The-Sea), which scores slightly higher. For more schools in Encinitas, see our Encinitas schools guide .
Nearby Schools
20 within 2.3 mi| School | Distance | Rating |
|---|---|---|
| Sunset High (Continuation) Encinitas | 0.1 mi | 7.6 |
| PACIFIC ACADEMY Encinitas | 0.2 mi | 7.6 |
| San Dieguito HS Academy Encinitas | 0.6 mi | 7.4 |
| Ocean Knoll Elementary Encinitas | 0.6 mi | 5.4 |
| Seeds of Hope Academy Encinitas | 0.7 mi | — |
| Oak Crest Middle Encinitas | 0.8 mi | 6.7 |
| Ada W. Harris Elementary Cardiff-By-The-Sea | 1.0 mi | 7.5 |
| JCS - Cedar Cove Julian | 0.9 mi | 7.3 |
| Norton High School Encinitas | 1.0 mi | — |
| Lingua Natal Encinitas | 1.3 mi | — |
| Paul Ecke-Central Elementary Encinitas | 1.3 mi | 6.2 |
| Cardiff Elementary Cardiff-By-The-Sea | 1.4 mi | 8.3 |
| MONTESSORI SCHOOL OF ENCINITAS Encinitas | 1.3 mi | — |
| Village Gate Children's Academy Cardiff | 1.5 mi | — |
| VILLAGE GATE CHILDREN'S ACADEMY Cardiff-by-the-Sea | 1.5 mi | 6.2 |
| Flora Vista Elementary Encinitas | 1.7 mi | 7.6 |
| GRAUER SCHOOL THE Encinitas | 1.8 mi | 6.3 |
| Grauer School, The Encinitas | 1.8 mi | — |
| Capri Elementary Encinitas | 2.1 mi | 7.5 |
| Encinitas Country Day School Encinitas | 2.3 mi | — |
Neighborhood Census ACS (2019-2023)
Census data for ZIP 92024 (ACS 2019-2023 5-Year Estimates) · Data sources
Median Income
$149,080
Median Home Value
$1,409,700
Median Rent
$2,643/mo
Population
50,030
College Educated
66.8%
Homeownership
67.7%
Avg Commute
24.3 min
Poverty Rate
5.8%
Median Age
44.3
Community Profile
The community surrounding Jcs - Mountain Oaks has a median household income of $149,080. It is a well-educated community where 67% of adults hold a bachelor's degree or higher. The median home value in the area is $1,409,700, with a median rent of $2,643/month. The local poverty rate of 5.8% is relatively low. The average commute for residents is 24 minutes. Source: U.S. Census ACS 2022 5-Year Estimates.
Similar Schools
Schools in the same state with comparable level, size, and ratings
| School | Rating |
|---|---|
| BASIS INDEPENDENT FREMONT UPPER SCHOOL Fremont, CA | 6.5 |
| Bella Vista Elementary Bella Vista, CA | 6.5 |
| Buckeye Elementary Shingle Springs, CA | 6.5 |
| CALVARY CHAPEL ACADEMY Yorba Linda, CA | 6.5 |
| CALVARY CHAPEL RIALTO CHRISTIAN SCHOOL Rialto, CA | 6.5 |
| CHRIST THE KING CATHOLIC SCHOOL Pleasant Hill, CA | 6.5 |
Frequently Asked Questions
Common questions about Jcs - Mountain Oaks
What grades does Jcs - Mountain Oaks serve?
Jcs - Mountain Oaks serves students in grades Kindergarten through 8th.
How many students attend Jcs - Mountain Oaks?
Jcs - Mountain Oaks has an enrollment of approximately 256 students.
What is the student-teacher ratio at Jcs - Mountain Oaks?
The student-teacher ratio at Jcs - Mountain Oaks is 21.3:1. A lower ratio generally means more individual attention per student. The national average is approximately 16:1 for public schools.
How does Jcs - Mountain Oaks rank in CA?
Jcs - Mountain Oaks is ranked #4318 out of 9,533 schools in CA.
What is Jcs - Mountain Oaks's MySchoolScout rating?
Jcs - Mountain Oaks has a composite rating of 6.5 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 Jcs - Mountain Oaks?
Based on the most recent state assessment data, Jcs - Mountain Oaks has 65.6% math proficiency and 71.3% reading/ELA proficiency.
Is Jcs - Mountain Oaks a charter school?
Yes, Jcs - Mountain Oaks is a charter school. Charter schools are publicly funded but independently operated, often with more flexibility in curriculum and teaching methods.
Is Jcs - Mountain Oaks a Title I school?
No, Jcs - Mountain Oaks is not currently a Title I school.
What does the Free & Reduced Lunch percentage mean for Jcs - Mountain Oaks?
23.0% of students at Jcs - 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.
Explore More Schools
Neighborhood Context
- City Safety
- Elevated (1,166/100K)
FBI UCR 2024. City-level (Encinitas). Data >1 year old.
Quick Facts NCES CCD (SY 2022-23)
- Grades
- Kindergarten – 8th
- Enrollment
- 256
- Student-Teacher Ratio
- 21.3:1
- Teachers (FTE)
- 12
- Free/Reduced Lunch
- 23.0%
- Type
- regular
- Setting
- Small City
- County
- San Diego County
- Phone
- (760) 632-4989
- Data Year
- 2023–2024
Resources & Links
District
JCS - Mountain Oaks District- District Enrollment
- 256
- Schools in District
- 1
- Per-Pupil Spending
- $13,097
- District Rank
- #1 of 1
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.