Gridley High School is a public high school in Gridley, California, United States, a city north of Sacramento and south of Redding.
As of 2026, Gridley High School operates on an 8:00 a.m. to 3:06 p.m. schedule. The only exception is on Wednesdays, when the school starts at 8:00 a.m. as usual, but ends at 1:54 p.m.
Gridley High School had an enrollment of about 670 students in the 2024-2025 school year.
The school is very integrated. In the school year 2024-2025, the student body was 0.3% American Indian/Alaska Native, 3.7% Asian, 0.3% Native Hawaiian/Pacific Islander, 59.1% Hispanic, 0.7% African American, and 34.3% White.
Gridley High School offers 18 sport teams, including baseball, softball, basketball, swimming, football, flag football, wrestling, volleyball, track & field, golf, soccer, cross country, tennis, and cheerleading.