Pioneer High School is a public school in West Whittier-Los Nietos, a census-designated place in unincorporated Los Angeles County, California.

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Pioneer High School
Address
10800 Benavon St. Whittier, California 90606 United States
Coordinates	33.9707°N 118.0793°W / 33.9707; -118.0793
Information
Type	Public secondary
Opened	Monday, September 14, 1959
Status	Open
School district	Whittier Union High School District
Principal	Mary Chapman
Teaching staff	52.41 (FTE)[1]
Grades	9–12
Enrollment	1,233 (2020-21)[1]
Student to teacher ratio	23.53[1]
Color(s)	Green, black, white
Mascot	Titan
Nickname	PiHi or Pioneer
Team name	Titans
Newspaper	Titan Tribune (1959-200X)
Yearbook	The Torch
Website	phs.wuhsd.org

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Pioneer High School encourages the taking of AP courses in order to challenge and prepare for college.^[2]

Pioneer High School offers a wide variety of AP courses, which include:

• AP Biology
• AP Calculus AB
• AP Calculus BC
• AP Chemistry
• AP English Language and Composition
• AP English Literature and Composition
• AP Environmental Science
• AP French Language
• AP Human Geography
• AP Physics C
• AP Spanish Language
• AP Spanish Literature
• AP United States Government and Politics
• AP United States History
• AP World History

Pioneer High School, home of the Titans, is located in unincorporated community of West Whittier-Los Nietos, California, neighboring the city of Pico Rivera. The school serves students from the Los Nietos, South Whittier, and Whittier City school districts. PHS is one of the 5 comprehensive high schools in the Whittier Union High School District.

The student body at pioneer is 96.4% Hispanic, 1.8% White, and less than 1% each Asian, Black, Native American and Pacific Islander. (As of 2020-2021)^[1]

• Lauren Tewes; actress.^[4]