Discovery Bay Elementary

Grades K–5 Public District: Byron Union Elementary

1700 Willow Lake Rd., Discovery Bay, CA 94505 Map

Math (met standard)
61%
+19 state 42% · 2025-26
English (met standard)
61%
+15 state 46% · 2025-26
Science (met standard)
40%
+4 state 35% · 2025-26
Low income
41%
free or reduced-price lunch
Students
417
2024-25
Students per teacher
21.4
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 75% state 47% · 2025-26 63% state 44% · 2025-26 —
Grade 4 60% state 42% · 2025-26 61% state 46% · 2025-26 —
Grade 5 48% state 37% · 2025-26 60% state 49% · 2025-26 40% state 35% · 2025-26
All grades 61% state 42% · 2025-26 61% state 46% · 2025-26 40% state 35% · 2025-26
Results by year (all grades)
School year Math English Science
2025-26 61% state 42% 61% state 46% 40% state 35%
2024-25 61% state 42% 69% state 46% 51% state 33%
2023-24 57% state 40% 58% state 45% 48% state 33%
2022-23 61% state 40% 56% state 44% 43% state 32%
2021-22 62% state 38% 62% state 44% 38% state 31%
2018-19 62% state 44% 67% state 50% 31% state 32%
2017-18 53% state 42% 65% state 49% —
2016-17 50% state 40% 53% state 45% —
2015-16 55% state 39% 57% state 45% —
2014-15 56% state 35% 58% state 41% —

Students

Race and ethnicity, 2024-25

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.

Pick to compare
Timber Point Elementary
Grades K–5 · Byron Union Elementary
1.2 mi
40%
−2 vs state
45%
−2 vs state
40%
+5 vs state
5% Average of math, English and science: 36% in 2022-23 → 41% in 2025-26 26% 362 White 43%
Byron Institute for Independent Study
Grades K–8 Alternative · Byron Union Elementary
1.2 mi
32%
27%
11%
−21 vs state · 2024-25
10% Average of math, English and science: 20% in 2022-23 → 30% in 2025-26 42% 26 Hispanic 38%
Old River Elementary
Grades K–8 · Knightsen Elementary
2.6 mi
48%
+8 vs state
58%
+10 vs state
40%
+5 vs state
Average of math, English and science: 50% in 2022-23 → 48% in 2025-26 15% 332 White 46%