JCS - Mountain Oaks
🇺🇸 Official data · 2025Encinitas, California 92024 · JCS - Mountain Oaks District
#396 of 5,693 elementary schools in California
#6250 of 50,301 nationally
About JCS - Mountain Oaks
JCS - Mountain Oaks is a charter elementary located in Encinitas, in the JCS - Mountain Oaks District school district of California, United States. It caters for Grades K–8. In 2025 it enrolled 255 students. Publicly funded charter schools operating under a performance contract; free to attend.
Its Success Index (US) is 77.8 out of 100, placing it in the top 25% of elementary schools in United States and 396th of 5,693 ranked elementary schools in California. Its strongest component is reading proficiency (89th percentile), and its weakest is students per teacher (31th percentile).
Other published figures: enrollment 255.
There are 10 schools in Encinitas; JCS - Mountain Oaks ranks 2nd of 9 scored schools there.
Success Index (US) breakdown
Each component is a percentile against elementary schools across United States.
- Math proficiency (30%)70%
- Reading proficiency (30%)75%
- Community advantage (fewer free/reduced-price lunch) (25%)25.9%
- Students per teacher (15%)17.0
The Success Index (US) summarises published data about a school community. It is not a measure of teaching quality. Read the methodology.
Published measures
All figures published for JCS - Mountain Oaks by the official sources.
- Enrollment
- 255
- Students enrolled in the latest NCES directory year.
- Free/reduced-price lunch
- 25.9%
- Share of students eligible for free or reduced-price lunch.
- Students per teacher
- 17.0
- Enrollment divided by FTE teachers; not class size.
- Reading proficiency
- 75%
- Share of tested students proficient or above (all students, all grades).
- Math proficiency
- 70%
- Share of tested students proficient or above (all students, all grades).
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Schools near JCS - Mountain Oaks
Closest schools by straight-line distance, with their Success Index (US).
Ocean Knoll Elementary
Encinitas · Public elementary · Grades K–6
479 students · 960 m away
San Dieguito HS Academy
Encinitas · Public high · Grades 9–12
1,843 students · 962 m away
Oak Crest Middle
Encinitas · Public middle · Grades 7–8
758 students · 1.4 km away
JCS - Cedar Cove
Encinitas · Charter other · Grades K–12
131 students · 1.5 km away
Ada W. Harris Elementary
Cardiff-by-the-Sea · Public elementary · Grades 3–6
382 students · 1.7 km away
Paul Ecke-Central Elementary
Encinitas · Public elementary · Grades K–6
569 students · 2.0 km away
Cardiff Elementary
Cardiff-by-the-Sea · Public elementary · Grades K–2
259 students · 2.3 km away
Flora Vista Elementary
Encinitas · Public elementary · Grades K–6
377 students · 2.7 km away
Capri Elementary
Encinitas · Public elementary · Grades K–6
613 students · 3.4 km away
Park Dale Lane Elementary
Encinitas · Public elementary · Grades K–6
424 students · 3.5 km away
Similar schools
Charter elementary schools in California with a comparable Enrollment.
Dr. Lewis Dolphin Stallworth Sr. Charter
Stockton · Charter elementary · Grades K–8
256 students
Sunridge Charter
Sebastopol · Charter elementary · Grades K–8
256 students
Redding STEM Academy
Redding · Charter elementary · Grades K–8
253 students
Stella Elementary Charter Academy
Los Angeles · Charter elementary · Grades K–4
258 students
Linscott Charter
Watsonville · Charter elementary · Grades K–8
258 students
California Republic Leadership Academy Capistrano
San Juan Capistrano · Charter elementary · Grades K–8
260 students
Frequently asked questions
Is JCS - Mountain Oaks a good school?
JCS - Mountain Oaks has a Success Index (US) of 77.8 out of 100 (Top 25% of elementary schools in United States) and ranks #396 of 5,693 in California. The index summarises published data about the school community and, where available, attainment; it does not measure teaching quality, so visit the school and ask about support at your child's level.
Where does JCS - Mountain Oaks rank in California?
JCS - Mountain Oaks ranks #396 of 5,693 elementary schools in California and #6250 of 50,301 nationally on the Success Index (US) (2025 data).
How many students attend JCS - Mountain Oaks?
JCS - Mountain Oaks had 255 students in 2025.
Is JCS - Mountain Oaks a elementary school or a high school?
JCS - Mountain Oaks is classified as a elementary covering Grades K–8. It is a charter school.
What other schools are near JCS - Mountain Oaks?
There are 10 schools within 15 km of JCS - Mountain Oaks; they are listed on this page with their Success Index (US) and distance, and can be compared side by side.