Stone Bridge
🇺🇸 Official data · 2025Napa, California 94558 · Stone Bridge District
#1020 of 5,693 elementary schools in California
#13737 of 50,301 nationally
About Stone Bridge
Stone Bridge is a charter elementary located in Napa, in the Stone Bridge District school district of California, United States. It caters for Grades K–8. In 2025 it enrolled 278 students. Publicly funded charter schools operating under a performance contract; free to attend.
Its Success Index (US) is 66.6 out of 100, placing it in the top 50% of elementary schools in United States and 1020th of 5,693 ranked elementary schools in California. Its strongest component is community advantage (fewer free/reduced-price lunch) (91th percentile), and its weakest is students per teacher (5th percentile).
Other published figures: enrollment 278.
There are 22 schools in Napa; Stone Bridge ranks 2nd of 20 scored schools there.
Success Index (US) breakdown
Each component is a percentile against elementary schools across United States.
- Math proficiency (30%)52%
- Reading proficiency (30%)72%
- Community advantage (fewer free/reduced-price lunch) (25%)18.3%
- Students per teacher (15%)27.8
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 Stone Bridge by the official sources.
- Enrollment
- 278
- Students enrolled in the latest NCES directory year.
- Free/reduced-price lunch
- 18.3%
- Share of students eligible for free or reduced-price lunch.
- Students per teacher
- 27.8
- Enrollment divided by FTE teachers; not class size.
- Reading proficiency
- 72%
- Share of tested students proficient or above (all students, all grades).
- Math proficiency
- 52%
- Share of tested students proficient or above (all students, all grades).
Free academic assessment
Is your child on grade level in reading and math?
Success Tutoring offers personalised English and math tutoring from Kindergarten to Grade 12. Start with a free online assessment and a clear plan for the year ahead.
- Personalised learning plan mapped to the Australian Curriculum
- English & Maths from Kindergarten to Year 12
- Flexible memberships, no lock-in contracts
- Centres across NSW, VIC, QLD, WA, SA and ACT
Schools near Stone Bridge
Closest schools by straight-line distance, with their Success Index (US).
Silverado Middle
Napa · Public middle · Grades 6–8
673 students · 1.4 km away
Phillips Elementary
Napa · Public elementary · Grades K–5
373 students · 2.0 km away
Napa Preschool Program
Napa · Public other
· 2.1 km away
Alta Heights Elementary
Napa · Public elementary · Grades K–5
318 students · 2.5 km away
Mayacamas Charter Middle
Napa · Charter middle · Grades 6–8
0 students · 3.7 km away
Mayacamas Countywide Middle
Napa · Charter middle · Grades 6–8
127 students · 3.7 km away
Shearer Elementary
Napa · Public elementary · Grades K–8
501 students · 3.9 km away
Vichy Elementary
Napa · Public elementary · Grades K–5
297 students · 4.5 km away
McPherson Elementary
Napa · Public elementary · Grades K–5
376 students · 4.6 km away
Napa High
Napa · Public high · Grades 9–12
1,642 students · 4.8 km away
Similar schools
Charter elementary schools in California with a comparable Enrollment.
Rise Kohyang Elementary
Los Angeles · Charter elementary · Grades K–5
278 students
Sartorette Charter
San Jose · Charter elementary · Grades K–5
278 students
Old Adobe Elementary Charter
Petaluma · Charter elementary · Grades K–6
278 students
Aveson School of Leaders
Pasadena · Charter elementary · Grades K–5
279 students
Dual Language Immersion North County
Vista · Charter elementary · Grades K–8
276 students
Rocketship Redwood City
Redwood City · Charter elementary · Grades K–5
275 students
Frequently asked questions
Is Stone Bridge a good school?
Stone Bridge has a Success Index (US) of 66.6 out of 100 (Top 50% of elementary schools in United States) and ranks #1020 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 Stone Bridge rank in California?
Stone Bridge ranks #1020 of 5,693 elementary schools in California and #13737 of 50,301 nationally on the Success Index (US) (2025 data).
How many students attend Stone Bridge?
Stone Bridge had 278 students in 2025.
Is Stone Bridge a elementary school or a high school?
Stone Bridge is classified as a elementary covering Grades K–8. It is a charter school.
What other schools are near Stone Bridge?
There are 10 schools within 15 km of Stone Bridge; they are listed on this page with their Success Index (US) and distance, and can be compared side by side.