Granite Hills High

As a middle-of-the-pack four-year high school in Porterville, California, Granite Hills High works with 1,206 students from grades 9 through 12, overseen by Porterville Unified. Compared to the state average of about 838 students per school, that is 44% bigger than typical.

Porterville Unified runs 22 schools in total, collectively educating 13,893 students. Granite Hills High is one of those campuses.

Demographically, Granite Hills High shows that nearly all students (90%) are Hispanic. The remainder breaks down as 6% White. By comparison, Tulare County as a whole is about 67% Hispanic, so the school skews noticeably more Hispanic than its surroundings.

Looking at school resources, The school lists 55 full-time-equivalent teachers, for a student-teacher ratio near 22.0:1. The state averages around 18.2:1, so this campus is higher than the state norm typical. An estimated 96% of students are eligible for free or reduced-price lunch, a number frequently used as a low-income enrollment indicator. That share is higher than Tulare County's rate of about 77%.

On a residual basis (actual vs predicted given the student mix), Granite Hills High ranks in the top 10% of California public schools. The BeatsExpectations model, a per-state regression of composite proficiency on FRL share, predicts schools with this student profile to land around 22.5%; Granite Hills High posts 39.8%, +17.3 points above that line.

Around the school, census data for Tulare County shows median household earnings sit near $71,300, roughly 17% of adults have completed at least a four-year degree, and roughly 15% of residents live below the federal poverty line. Across Tulare County's 196 public schools (combined enrollment of about 101,494 students), Granite Hills High is one campus in the mix.

Alta Vista Elementary is the nearest neighboring public school, about 1.0 miles from this campus. Counting just inside five miles, 8 other public schools cluster around Granite Hills High. Ranking that nearby cluster on reported proficiency puts Granite Hills High at 2nd of 8; the average score across the group is 30.5%.

The school occupies an outlying site.

Looking at the recent track record. Over the past 7-year window, the student count shrank 13%: 1,388 students in 2018 compared to 1,206 in 2025. Class-load math has tightened: from 24.8:1 in 2018 to 22.0:1 in 2025.

In the discussion threads here, members of the Granite Hills High community share and discuss open house dates, ride-share offers, and field-trip permission slips. Contributors range from current parents to recent graduates and teachers.