Mattole Triple Junction High

Mattole Triple Junction High is a public high school run by Mattole Unified in Petrolia, California. There are 2 students enrolled, covering grades 9 through 12. That puts enrollment 100% below the 838-student average for high schools in California.

Mattole Unified is made up of 3 schools with 42 students in all.

No group is above 50% at Mattole Triple Junction High; the largest is White, at 50%. It is also 50% Hispanic. Humboldt County's residents are about 72% White, 22 points above the school's share.

The school's 2 full-time-equivalent teachers translate to a student-to-teacher ratio of 1.0:1. High schools in California average 18.2:1, 17.2 more students per teacher than here.

In Humboldt County, where the school is located, median household income comes to about $61,160, about 33% of adults have at least a bachelor's degree, and roughly 11% of residents are in poverty. There are 92 public schools in the county, enrolling about 17,319, Mattole Triple Junction High among them.

Mattole Elementary is less than a tenth of a mile away, making it the nearest public school.

In the federal locale system, Mattole Triple Junction High is coded Rural: Remote, for schools in rural territory far from an urban area.

Mattole Triple Junction High had 13 students in 2020-21 and 2 in 2024-25, according to federal records. Those counts may cover different grade spans. There were fewer students per teacher in 2024-25 (1.0:1) than in 2020-21 (4.3:1).

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