Excelsior Middle School
Middle school in Byron, CA · Byron Union Elementary · Grades 6-8
On the spring 2026 state tests, 43% of Excelsior Middle School students met or exceeded California's reading (ELA) standard and 30% met the math standard. In reading, that is 5 points below the Byron Union Elementary average (48%) and 6 points below the California average (49%). Its reading result is higher than 37% of Bay Area middle schools. Reading results in 2026 were 2 points higher than in 2024, and math results were 2 points lower than in 2024.
Test scores, 2024 to 2026
| Subject | Spring 2024 | Spring 2025 | Spring 2026 | Change |
|---|---|---|---|---|
| Reading (ELA) | 41% | 49% | 43% | +2 pts |
| Math | 32% | 35% | 30% | −2 pts |
Compared with nearby averages
| Spring 2026 | Reading (ELA) | Math |
|---|---|---|
| Excelsior Middle School | 43% | 30% |
| Byron Union Elementary | 48% | 40% |
| Contra Costa County | 52% | 43% |
| California | 49% | 38% |
Results by grade, spring 2026
| Grade | Reading (ELA) | Math |
|---|---|---|
| 6th grade | 36% | 32% |
| 7th grade | 45% | 35% |
| 8th grade | 48% | 22% |
Students are tested in grades 3 to 8 and 11. Each grade is a different group of students, so differences between grades are not a trend.
Homes near Excelsior Middle School
The typical home value in ZIP code 94514, where Excelsior Middle School is located, is $840K, up 3.9% over the past year (Zillow Home Value Index). Prices inside the school's attendance zone can differ.
Zillow and Redfin can both search for homes inside a school’s attendance zone and email you new listings. Search for the school by name on either site and save the search.
Nearby middle schools
| Distance | School | Reading (ELA) | Math | Typical home value (ZIP) |
|---|---|---|---|---|
| 4.5 mi | Edna Hill MiddleBrentwood · Grades 6-8 | 55% | 37% | $782K |
| 5.7 mi | William B. Bristow MiddleBrentwood · Grades 6-8 | 51% | 34% | $782K |
| 6.8 mi | J. Douglas Adams MiddleBrentwood · Grades 6-8 | 69% | 55% | $782K |
| 8.3 mi | Delta Vista MiddleOakley · Grades 6-8 | 36% | 16% | $654K |
| 8.6 mi | O'Hara Park MiddleOakley · Grades 6-8 | 36% | 15% | $654K |
| 9.3 mi | Black Diamond MiddleAntioch · Grades 6-8 | 21% | 8% | $658K |
School details
- Address
- 14301 Byron Highway, Byron, CA 94514
Get directions · See it on our map - Phone
- (925) 809-7530
- District
- Byron Union Elementary
- County
- Contra Costa County
- Grades
- 6-8
- Students
- 387 (2025-26)
- Type
- Middle school · Traditional
- Website
- www.excelsiormiddleschool.us
- State school code
- 07616636003669
Common questions
How did Excelsior Middle School do on state tests?
In spring 2026, 43% of students met or exceeded the reading (ELA) standard and 30% met the math standard, compared with 49% and 38% across California.
How many students attend Excelsior Middle School?
387 students were enrolled in the 2025-26 school year, in grades 6-8.
How much do homes cost near Excelsior Middle School?
The typical home value in ZIP code 94514, where Excelsior Middle School is located, is $840K, up 3.9% over the past year (Zillow Home Value Index). Prices inside the school's attendance zone can differ.
Does living near Excelsior Middle School guarantee a spot?
No. Public schools assign students by attendance zone, which Byron Union Elementary sets and can change. Confirm the zone for a specific address with the district before you buy or rent.