Stone Bridge

Grades K–8 Public charter District: Stone Bridge District

1019 2nd Ave., Napa, CA 94558 Map

Math (met standard)

30%

−10 state 40% · 2025-26

English (met standard)

40%

−8 state 48% · 2025-26

Science (met standard)

49%

+14 state 35% · 2025-26

Low income

18%

free or reduced-price lunch

Students

278

2024-25

Students per teacher

27.8

2024-25

Test score trends

Share of students who met or exceeded the state standard each year.

Latest results by grade

Grade	Math	English	Science
Grade 3	13% state 47% · 2025-26	23% state 44% · 2025-26	—
Grade 4	14% state 42% · 2025-26	25% state 46% · 2025-26	—
Grade 5	38% state 37% · 2025-26	48% state 49% · 2025-26	52% state 35% · 2025-26
Grade 6	17% state 37% · 2025-26	41% state 48% · 2025-26	—
Grade 7	56% state 38% · 2025-26	56% state 51% · 2025-26	—
Grade 8	46% state 36% · 2025-26	50% state 50% · 2025-26	46% state 35% · 2025-26
All grades	30% state 40% · 2025-26	40% state 48% · 2025-26	49% state 35% · 2025-26

Results by year (all grades)

School year	Math	English	Science
2025-26	30% state 40%	40% state 48%	49% state 35%
2024-25	28% state 39%	42% state 47%	28% state 33%
2023-24	33% state 37%	42% state 46%	46% state 31%
2022-23	30% state 36%	44% state 45%	22% state 31%
2021-22	39% state 35%	55% state 46%	40% state 30%
2018-19	52% state 38%	70% state 51%	49% state 31%
2017-18	34% state 40%	59% state 49%	—
2016-17	46% state 39%	64% state 47%	—
2015-16	36% state 36%	60% state 47%	—
2014-15	35% state 34%	58% state 42%	—

Students

Race and ethnicity, 2024-25

Asian 4%
White 62%
Hispanic 20%
Black 1%
Two or more 13%
Other 0%

Year-by-year history is loaded from the NCES Common Core of Data (2017-18 onward).

Nearby schools

Subject percentages show the share of students who met or exceeded the state standard.


Silverado Middle Grades 6–8 · Napa Valley Unified	0.9 mi	18% −19 vs state	30% −19 vs state	19% −17 vs state	4% Average of math, English and science: 18% in 2022-23 → 22% in 2025-26	80%	673	Hispanic 75%
Phillips Elementary Grades K–5 · Napa Valley Unified	1.2 mi	21% −21 vs state	22% −24 vs state	11% −24 vs state	Average of math, English and science: 18% in 2022-23 → 18% in 2025-26	88%	373	Hispanic 92%
Camille Creek Community Grades 6–12 Alternative · Napa County Office of Education	1.3 mi	0% −32 vs state	3% −54 vs state	5% −28 vs state	Average of math, English and science: 3% in 2022-23 → 3% in 2025-26	78%	60	Hispanic 81%
Alta Heights Elementary Grades K–5 · Napa Valley Unified	1.5 mi	47% +5 vs state	43% −3 vs state	26% −10 vs state	Average of math, English and science: 39% in 2022-23 → 39% in 2025-26	56%	318	White 48%
Mayacamas Charter Middle Grades 6–8 Charter · Mayacamas Charter Middle District	2.3 mi	13% −20 vs state · 2023-24	24% −22 vs state · 2023-24	6% −23 vs state · 2023-24	Not enough years of data	—	0
Mayacamas Countywide Middle Grades 6–8 Charter · Mayacamas Countywide Middle District	2.3 mi	18% −19 vs state	32% −17 vs state	21% −14 vs state	Not enough years of data	44%	127	Hispanic 63%
Shearer Elementary Grades K–8 · Napa Valley Unified	2.4 mi	17% −23 vs state	24% −24 vs state	5% −30 vs state	3% Average of math, English and science: 12% in 2022-23 → 15% in 2025-26	91%	501	Hispanic 92%
Vichy Elementary Grades K–5 · Napa Valley Unified	2.8 mi	63% +22 vs state	60% +13 vs state	37% +2 vs state	Average of math, English and science: 53% in 2022-23 → 53% in 2025-26	42%	297	White 63%
McPherson Elementary Grades K–5 · Napa Valley Unified	2.8 mi	14% −28 vs state	18% −29 vs state	8% −27 vs state	Average of math, English and science: 14% in 2022-23 → 13% in 2025-26	91%	376	Hispanic 92%
Crossroads Academy Grades 7–12 Alternative · Napa County Office of Education	3.0 mi	0%	0%	—	Not enough years of data	77%	13	Hispanic 85%