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Mattole Triple Junction High School

29289 Chambers Rd.
Petrolia, CA 95558
(School attendance zone shown in map)
Mattole Triple Junction High School serves 3 students in grades 9-12. 
The student:teacher ratio of 2:1 is lower than the California state level of 21:1.
Minority enrollment is 33% of the student body (majority American Indian), which is lower than the California state average of 80% (majority Hispanic).

Quick Stats (2025)

  • Grades: 9-12
  • Enrollment: 3 students
  • Student:Teacher Ratio: 2:1
  • Minority Enrollment: 33%
  • Source: National Center for Education Statistics (NCES), CA Dept. of Education

Top Rankings

Mattole Triple Junction High School ranks among the top 20% of public schools in California for:

School Overview

Mattole Triple Junction High School's student population of 3 students has declined by 75% over five school years.
The teacher population of 2 teachers has declined by 33% over five school years.
Grades Offered
Grades 9-12
Total Students
3 students
Gender %
Total Classroom Teachers
2 teachers
School Calendar

School Rankings

The diversity score of Mattole Triple Junction High School is 0.45, which is less than the diversity score at state average of 0.63. The school's diversity has stayed relatively flat over five school years.
This School
State Level (CA)
Student : Teacher Ratio
2:1
21:1
American Indian
33%
1%
Asian
n/a
12%
Hispanic
n/a
56%
Black
n/a
5%
White
67%
20%
Hawaiian
n/a
n/a
Two or more races
n/a
6%
All Ethnic Groups
0.45
Eligible for Free Lunch
100%
54%
Eligible for Reduced Lunch (19-20)
8%
7%
School Statewide Testing
Source: National Center for Education Statistics (NCES), CA Dept. of Education
Profile last updated: 02/09/2025

Frequently Asked Questions

How many students attend Mattole Triple Junction High School?
3 students attend Mattole Triple Junction High School.
What is the racial composition of the student body?
67% of Mattole Triple Junction High School students are White, and 33% of students are American Indian.
What is the student:teacher ratio of Mattole Triple Junction High School?
Mattole Triple Junction High School has a student ration of 2:1, which is lower than the California state average of 21:1.
What grades does Mattole Triple Junction High School offer ?
Mattole Triple Junction High School offers enrollment in grades 9-12
What school district is Mattole Triple Junction High School part of?
Mattole Triple Junction High School is part of Mattole Unified School District.

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Quick Stats (2025)

  • Grades: 9-12
  • Enrollment: 3 students
  • Student:Teacher Ratio: 2:1
  • Minority Enrollment: 33%
  • Source: National Center for Education Statistics (NCES), CA Dept. of Education

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