Mattole Triple Junction High School (2025-26 Ranking)

29289 Chambers Rd.
Petrolia, CA 95558

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Tel: (707) 629-3250

humboldt.k12.ca.us

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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 Facts (2025-26)

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

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Distribution of Students By Grade Trends
Grade	Mattole Triple Junction High School
9	1
10	2

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Total Students

3 students

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Total Students Trends Over Years (1996-2023)
Year	Mattole Triple Junction High School
2023	8
2022	9
2021	13
2020	12
2019	12
2018	11
2017	11
2016	9
2015	10
2014	9
2013	7
2012	6
2011	9
2010	3
2009	6
2008	7
2007	13
2006	11
2005	22
2004	26
2003	16
2002	22
2001	26
2000	41
1999	46
1998	46
1997	64
1996	40

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Gender %

Total Classroom Teachers

2 teachers

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Total Classroom Teachers Trends Over Years (1995-2023)
Year	Mattole Triple Junction High School
2023	2
2022	2
2021	3
2020	3
2019	3
2018	3
2017	3
2016	4
2015	4
2014	4
2013	4
2012	4
2010	3
2009	3
2008	3
2007	2
2006	2
2005	4
2004	3
2003	3
2002	3
2001	5
2000	6
1999	6
1998	6
1997	6
1996	4
1995	4

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School Calendar

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School Rankings

The 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

View Data

Student-Teacher Ratio Comparison Over Years (1995-2023)
Year	Mattole Triple Junction High School	California	Mattole Unified School District
2023	4:1	22:1	17:1
2022	5:1	21:1	17:1
2021	4:1	22:1	17:1
2020	4:1	23:1	17:1
2019	4:1	23:1	17:1
2018	4:1	23:1	16:1
2017	4:1	23:1	16:1
2016	2:1	24:1	18:1
2015	3:1	24:1	14:1
2014	2:1	24:1	15:1
2013	2:1	24:1	14:1
2012	2:1	23:1	14:1
2010	1:1	21:1	14:1
2009	2:1	20:1	15:1
2008	2:1	18:1	12:1
2007	7:1	21:1	20:1
2006	6:1	20:1	18:1
2005	6:1	21:1	17:1
2004	9:1	21:1	18:1
2003	5:1	20:1	19:1
2002	7:1	20:1	7:1
2001	5:1	20:1	23:1
2000	7:1	21:1	18:1
1999	8:1	21:1	14:1
1998	8:1	21:1	12:1
1997	11:1	23:1	12:1
1996	9:1	25:1	14:1
1995	7:1	25:1	14:1

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American Indian

33%

View Data

American Indian Student Percentage Comparison Over Years (1997-2023)
Year	Mattole Triple Junction High School	California	Mattole Unified School District
2023	13%	1%	3%
2007	8%	2%	10%
2006	7%	1%	11%
2005	5%	2%	10%
2004	8%	2%	10%
2003	6%	2%	9%
2002	9%	2%	12%
2001	17%	2%	10%
2000	15%	1%	8%
1999	6%	1%	5%
1997	9%	1%	8%

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Asian

n/a

12%

View Data

Asian Student Percentage Comparison Over Years (2001-2009)
Year	Mattole Triple Junction High School	California	Mattole Unified School District
2009	17%	11%	3%
2007	8%	12%	4%
2005	5%	12%	3%
2004	4%	12%	3%
2001	5%	11%	4%

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Hispanic

n/a

56%

View Data

Hispanic Student Percentage Comparison Over Years (1999-2023)
Year	Mattole Triple Junction High School	California	Mattole Unified School District
2023	25%	55%	14%
2022	33%	56%	14%
2021	23%	56%	14%
2020	8%	55%	14%
2019	8%	55%	14%
2011	22%	51%	10%
2009	17%	49%	4%
2007	8%	49%	5%
2002	5%	44%	9%
2000	7%	42%	2%
1999	4%	41%	4%

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Black

n/a

View Data

Black Student Percentage Comparison Over Years (1998-2005)
Year	Mattole Triple Junction High School	California	Mattole Unified School District
2005	5%	8%	2%
1998	2%	9%	2%

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White

67%

20%

View Data

White Student Percentage Comparison Over Years (1996-2023)
Year	Mattole Triple Junction High School	California	Mattole Unified School District
2023	62%	21%	69%
2022	67%	21%	69%
2021	69%	22%	69%
2020	84%	23%	70%
2019	84%	23%	70%
2018	100%	24%	72%
2017	100%	24%	72%
2016	100%	24%	74%
2015	100%	24%	75%
2014	100%	25%	76%
2013	100%	25%	76%
2012	100%	26%	77%
2011	78%	27%	74%
2010	100%	27%	76%
2009	50%	28%	80%
2008	100%	29%	81%
2007	76%	29%	79%
2006	98%	31%	78%
2005	85%	31%	80%
2004	88%	32%	78%
2003	94%	34%	81%
2002	86%	35%	72%
2001	78%	36%	76%
2000	78%	37%	88%
1999	80%	38%	54%
1998	98%	39%	92%
1997	91%	39%	92%
1996	84%	40%	91%

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Hawaiian

n/a

Two or more races

n/a

View Data

Two or More Races Student Percentage Comparison Over Years (2009-2021)
Year	Mattole Triple Junction High School	California	Mattole Unified School District
2021	8%	5%	13%
2020	8%	4%	12%
2019	8%	4%	12%
2009	16%	3%	3%

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All Ethnic Groups

0.45

0.63

View Data

Diversity Score Comparison Over Years (1995-2023)
Year	Mattole Triple Junction High School	California	Mattole Unified School District
2023	0.54	0.64	0.49
2022	0.45	0.63	0.49
2021	0.47	0.62	0.49
2020	0.28	0.63	0.48
2019	0.28	0.63	0.48
2011	0.35	0.67	0.43
2009	0.68	0.71	0.36
2007	0.40	0.67	0.36
2005	0.27	0.67	0.35
2004	0.22	0.67	0.34
2003	0.11	0.67	0.32
2002	0.25	0.67	0.41
2001	0.39	0.67	0.36
2000	0.37	0.67	0.23
1999	0.37	0.67	0.37
1998	0.04	0.67	0.14
1997	0.17	0.67	0.15
1996	0.27	0.67	0.16
1995	0.25	0.67	0.20

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Eligible for

100%

54%

View Data

Free Lunch Eligibility Comparison Over Years (1995-2023)
Year	Mattole Triple Junction High School	California	Mattole Unified School District
2023	38%	51%	58%
2022	33%	51%	57%
2021	23%	53%	57%
2020	25%	52%	58%
2019	25%	52%	58%
2018	27%	49%	49%
2017	27%	49%	49%
2016	33%	50%	52%
2015	30%	50%	53%
2014	11%	49%	35%
2011	56%	46%	30%
2009	33%	43%	26%
2008	43%	41%	20%
2007	62%	40%	24%
2006	100%	40%	6%
2005	45%	40%	3%
2004	35%	40%	2%
2002	55%	39%	21%
2001	42%	39%	7%
2000	34%	40%	16%
1999	28%	40%	5%
1998	50%	47%	45%
1997	52%	47%	55%
1996	55%	46%	56%
1995	41%	45%	57%

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Eligible for (19-20)

View Data

Reduced-Price Lunch Eligibility Comparison Over Years (1999-2020)
Year	Mattole Triple Junction High School	California	Mattole Unified School District
2020	8%	7%	12%
2019	8%	7%	12%
2014	22%	9%	29%
2011	11%	8%	54%
2009	17%	10%	28%
2008	14%	10%	38%
2001	4%	8%
2000	15%	7%	4%
1999	4%	7%

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School Statewide Testing

View Education Department Test Scores

School District Name

Mattole Unified School District

Source: National Center for Education Statistics (NCES), CA Dept. of Education

Profile last updated: 02/09/2025

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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.

School Reviews

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