Grade Trends

Byron Institute for Independent Study

Grades K–8 Public Alternative District: Byron Union Elementary

40 Newbury Ln., Discovery Bay, CA 94505 Map

Math (met standard)
32%
state — · 2025-26
English (met standard)
27%
state — · 2025-26
Science (met standard)
11%
−21 state 32% · 2024-25
Low income
42%
free or reduced-price lunch
Students
26
2024-25
Students per teacher
28.9
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 7 15% state 34% · 2023-24 31% state 47% · 2023-24 —
Grade 8 24% state 34% · 2024-25 18% state 48% · 2024-25 12% state 32% · 2024-25
All grades 32% state — · 2025-26 27% state — · 2025-26 11% state 32% · 2024-25
Results by year (all grades)
School year Math English Science
2025-26 32% 27% —
2024-25 23% state 34% 13% state 48% 11% state 32%
2023-24 14% state 34% 25% state 47% —
2022-23 9% 30% —
2021-22 8% 31% —

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
0.0 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%
Discovery Bay Elementary
Grades K–5 · Byron Union Elementary
1.2 mi
61%
+19 vs state
61%
+15 vs state
40%
+4 vs state
Average of math, English and science: 53% in 2022-23 → 54% in 2025-26 41% 417 Hispanic 42%
Old River Elementary
Grades K–8 · Knightsen Elementary
1.9 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%
Excelsior Middle
Grades 6–8 · Byron Union Elementary
2.4 mi
30%
−7 vs state
43%
−6 vs state
26%
−9 vs state
4% Average of math, English and science: 37% in 2022-23 → 33% in 2025-26 33% 377 White 46%
Garin Elementary
Grades K–5 · Brentwood Union
4.1 mi
42%
±0 vs state
55%
+8 vs state
40%
+4 vs state
Average of math, English and science: 45% in 2022-23 → 46% in 2025-26 42% 785 Hispanic 36%
Edna Hill Middle
Grades 6–8 · Brentwood Union
4.2 mi
37%
±0 vs state
55%
+6 vs state
39%
+4 vs state
8% Average of math, English and science: 36% in 2022-23 → 44% in 2025-26 — 1,047 Hispanic 39%
Mary Casey Black Elementary
Grades K–5 · Brentwood Union
4.7 mi
40%
−2 vs state
46%
±0 vs state
33%
−3 vs state
6% Average of math, English and science: 33% in 2022-23 → 39% in 2025-26 47% 680 Hispanic 45%
Knightsen Elementary
Grades K–8 · Knightsen Elementary
4.8 mi
27%
−12 vs state
43%
−5 vs state
31%
−4 vs state
3% Average of math, English and science: 31% in 2022-23 → 34% in 2025-26 38% 316 Hispanic 50%