The Baseline League is a high school athletic conference that is part of the

CIF Southern Section The California Interscholastic Federation-Southern Section (CIF-SS) is the governing body for high school athletics in most of Southern California and is the largest of the ten sections that comprise the California Interscholastic Federation (CIF ...

.Baseline League
/ref> Members are located in

San Bernardino County San Bernardino County (), officially the County of San Bernardino, is a county located in the southern portion of the U.S. state of California, and is located within the Inland Empire area. As of the 2020 U.S. Census, the population was 2,181, ...

, with Damien and St. Lucy's located in Los Angeles County. The Baseline League was formed in 1979, with original members Claremont High School, Glendora High School, Pomona High School, Chaffey High School, Damien High School, St. Lucy's Priory High School, Pomona Catholic Girl's High School, and Upland High School.

Members

Chino Hills High School Chino Hills High School, abbreviated CHHS, is located in Chino Hills, California, United States and is a public comprehensive high school serving a student body from three cities in the Chino Valley Unified School District. The school was establ ...

Damien High School Damien High School is an all-boys Roman Catholic high school in La Verne, in the U.S. state of California named for Saint Damien of Molokai. The school had its first graduating class in 1963. Each of Damien's freshmen classes draws from an avera ...

(all-boys school) *

Etiwanda High School Etiwanda High School is a public high school in Rancho Cucamonga, California, United States. It is one of the twelve schools of the Chaffey Joint Union High School District and serves students in the Etiwanda community on the northeast side of Ran ...

Los Osos High School Los Osos High School is a public high school located in the city of Rancho Cucamonga in Southern California's Inland Empire in the United States. It operates as part of the Chaffey Joint Union High School District. The school was named a Californ ...

Rancho Cucamonga High School Rancho Cucamonga High School is a public high school in the city of Rancho Cucamonga in Southern California's Inland Empire. It is one of nine high schools in the Chaffey Joint Union High School District. Rancho Cucamonga High School opened in A ...

* St. Lucy's Priory High School (all-girls school) *

Upland High School Upland High School is a four-year public high school located in the city of Upland, California. The school was established in 1955 as part of the Chaffey Joint Union High School District, and since 1988 it has been a member of the Upland Unified ...

References

CIF Southern Section leagues {{California-sport-stub