William J. Brennan High School
| William J. Brennan High School | |
|---|---|
| Address | |
2400 Cottonwood Way , , 78253  | |
| Coordinates | 29°27′29″N 98°43′30″W / 29.458°N 98.725°W | 
| Information | |
| School type | Public, high school | 
| Motto | "Brennan Fight Never Dies" | 
| Founded | 2010 | 
| Locale | Suburb: Large | 
| School district | Northside ISD | 
| NCES School ID | 483312012347 | 
| Principal | John Trimble | 
| Vice Principal | Joshua Hall | 
| Academic Dean | Michelle Craig | 
| Assistant Principal | Jennifer Torres Aaron Logan Ryan Brassell Kimberley Helaire-Sylvas  | 
| Faculty | 175.82 (on an FTE basis) | 
| Grades | 9–12 | 
| Enrollment | 3,142 (2022–1023) | 
| Student to teacher ratio | 17.87 | 
| Color(s) | Black and gold | 
| Athletics conference | UIL AAAAAA | 
| Mascot | Bears | 
| Feeder schools | Dr. Joe J. Bernal MS Gregory Luna MS  | 
| Sports District | 28-6A | 
| Website | Official website | 
William J. Brennan High School is the tenth public high school in the Northside Independent School District of San Antonio, Texas, United States. It is a four-year high school that opened in 2010 and graduated its first senior class in June 2012. During 2022–2023, Brennan High School had an enrollment of 3,142 students and a student to teacher ratio of 17.87. For the 2021–2022 school year, the school was given a "B" by the Texas Education Agency, with a distinction for Academic Achievement in Social Studies.