Excelsior Middle School
| Name | Excelsior Middle School |
| Grades | Class 06 to Class 08 |
| Address | 14301 Byron Hwy. |
| City | Byron |
| School District | Byron Union Elementary |
| County | Contra Costa County |
| Zipcode | 94514-2515 |
| Phone No. | (925)809-7530 |
| State | California |
| Rural | Fringe |
| Students | 505 |
| Teachers | 24 |
| Student Teacher Ratio | 21.3 students per teacher |
| Charter School | No |
| Magnet School | N/A |
Excelsior Middle School is located at 14301 Byron Hwy. in Byron city of Contra Costa County county in California. This school comes under Byron Union Elementary. You can call them at (925)809-7530 for more details. This is not a magnet school. Total five hundred five students from class 06 to class 08 study in this school who are taught by twenty four teachers. This is not a charter school. The student teacher ratio of this school is 21.3.