JCS - Mountain Oaks
539 Encinitas Boulevard, Encinitas, CA 92024-3748
Summary
Reading and math results average to the 93rd percentile among comparable California schools.
69.3% of students met California's reading standard, and it is holding steady.
67.7% of students met California's math standard, but it is slowly trending up.
Proficiency stats
| Current Reading Proficiency | 69.3% |
| Current Math Proficiency | 67.7% |
| Reading State Rank | 157/1,734 (91st percentile) |
| Math State Rank | 83/1,735 (95th percentile) |
School information
| Student / Teacher Ratio | 16:1 |
| Student enrollment (2024–25) | 255 |
| Low-Income Students | 66 (25.9%) |
| English Learners | 11 (4.3%) |
School Website
Great Schools
Niche
Ed-Data
CAASPP| Admissions | Open enrollment |
|---|---|
| Charter school | Yes |
| Magnet school | No |
Test score trends
Reading fell 3.8 points from last year and was unchanged over the full period. Math fell 2.4 points from last year and rose 3.1 points over the full period.
Reading Proficiency Scores
2026 state test results
Race and Ethnicity
Asian and Two or more races students have the strongest results.
Distribution of Scores by Grade
The share meeting the reading standard ranges from 57.7% to 81.1% across the grades shown. Overall, the school’s reading results rank in the top 10% among California schools in the same grade-level category.
Low-Income vs Non-Low-Income
The 11.3-point reading income gap is narrower than the 16.5-point gap at a typical California K–8 school. It narrowed over the period shown.
•
English Learners vs English Native
Results for both language groups are unavailable, so a current reading gap cannot be calculated.
Math Proficiency Scores
2026 state test results
Race and Ethnicity
Asian students have the strongest math results at about 85% proficiency. The other reported groups range from about 48% to 73%.
Distribution of Scores by Grade
The share meeting the math standard ranges from 55.0% to 83.8% across the grades shown. Overall, the school’s math results rank in the top 5% among California schools in the same grade-level category.
Low-Income vs Non-Low-Income
The 16.4-point math income gap is slightly wider than the 15.5-point gap at a typical California K–8 school. It narrowed over the period shown.
•English Learners vs English Native
Results for both language groups are unavailable, so a current math gap cannot be calculated.
Progress as students move up
2023–2026
How we compare income gaps
“Typical” means the median gap across 802 schools for reading and 801 for math. The comparison uses 2026 California K–8 schools with at least 20 tested students in each income group and a reported low-income student population. Each school counts once. Its gap is non-low-income proficiency minus low-income proficiency, including negative gaps. California state test data
Understanding this school
How does JCS - Mountain Oaks rank in California?
JCS - Mountain Oaks ranks No. 157 of 1,734 in reading and No. 83 of 1,735 in math for 2026. These proficiency rankings compare California schools in the same grade-level category.
How does JCS - Mountain Oaks compare with other schools in San Diego County?
JCS - Mountain Oaks is No. 10 in reading and No. 5 in math proficiency among the 65 K–8 schools in San Diego County with 2026 results.
Explore schools in San Diego County