The school was designed with a King Arthur theme, hence the cafeteria is known as Stonehenge, and the school's colors are the same as King Arthur's (crimson red, Columbia blue, and silver gray).

As of the 2020-2021 school year, Granger's students are 60.5% Hispanic, 20.9% White, 11.7% Asian/Pacific Islander, 2.0% Native American and 4.2% African-American.

Granger High School offers many competitive and non-competitive athletic, academic, and extra-curricular options.

Students can choose from Accolade (Creative Writing), AVID, band, baseball, basketball, choir, cross country, cheerleading, Dance Company, DECA, Debate, FBLA, FCCLA, football, French Club, Glee, GTV, golf, Japanese Club, Key Club, Lancer Action Team, Latin Club, Latinos in Action, Madrigals, Math Club, MESA, NHS, Orchestra, SkillsUSA, soccer, softball, Spanish Club, Stage Crew, Sterling Scholars, Student Government, swimming, tennis, theatre, track and field, Tri-Color Times (student newspaper), volleyball, wrestling, Yearbook, and the Excaliburs drill team.

The current principal of Granger High School is Tyler Howe.