Rosary High School is a Roman Catholic Catholic

Catholic

The word catholic comes from the Greek phrase , meaning "on the whole," "according to the whole" or "in general", and is a combination of the Greek words meaning "about" and meaning "whole"...

 all-girls

Single-sex education

Single-sex education, also known as single-gender education, is the practice of conducting education where male and female students attend separate classes or in separate buildings or schools. The practice was predominant before the mid-twentieth century, particularly in secondary education and...

 college preparatory high school

High school

High school is a term used in parts of the English speaking world to describe institutions which provide all or part of secondary education. The term is often incorporated into the name of such institutions....

 located in Fullerton, California

Fullerton, California

Fullerton is a city located in northern Orange County, California. As of the 2010 census, the city had a total population of 135,161.It was founded in 1887 by George and Edward Amerige and named for George H. Fullerton, who secured the land on behalf of the Atchison, Topeka and Santa Fe Railway...

. It is accredited by the Western Catholic Educational Association and the Western Association of Schools and Colleges

Western Association of Schools and Colleges

The Western Association of Schools and Colleges is one of six official academic bodies responsible for the accreditation of public and private universities, colleges, secondary and elementary schools in the United States and foreign institutions of American origin. The Western Association of...

 and is a member of the National Catholic Educational Association. Rosary's brother school is Servite High School

Servite High School

Servite High School is an all-boys, Roman Catholic college preparatory high school operated by the Order of Friar Servants of Mary . Located on a campus in Anaheim, California, USA, as of 2011 it had an enrollment of about 985 and about 9200 alumni. Its mascot is the Friar and its colors are black...

 and its sister school is Cornelia Connelly High School

Cornelia Connelly High School

Cornelia Connelly High School is a Catholic college preparatory high school for girls in Anaheim, California. Established in 1961 by the Sisters of the Society of the Holy Child Jesus, it is named after Cornelia Connelly, founder of that order. Although located in the Roman Catholic Diocese of...

.

Rosary was opened in 1965 by the Roman Catholic Archdiocese of Los Angeles

Roman Catholic Archdiocese of Los Angeles

The Archdiocese of Los Angeles is an archdiocese of the Roman Catholic Church in the U.S. state of California. Headquartered in Los Angeles, the archdiocese comprises the California counties of Los Angeles, Santa Barbara and Ventura. The diocesan cathedral is the Cathedral of Our Lady of the...

, and was originally administered by the Sisters of St. Joseph

Sisters of St. Joseph

The title Sisters of St. Joseph applies to several Roman Catholic religious congregations of women. The largest and oldest of these was founded in Le Puy-en-Velay, France...

 of Orange. In 1976 it came under the direction of the Roman Catholic Diocese of Orange

Roman Catholic Diocese of Orange

The Roman Catholic Diocese of Orange is a particular church of the Latin Rite of the Roman Catholic Church whose territory comprises the whole of Orange County, California, in the United States...

 at the latter's creation.

Rosary's brother school is Servite High School, in Anaheim, California. They share many activities together.

One of Rosary High School's most novel traditions is that of "Red and Gold," an annual school-wide, student-run musical competition. From January to March, the students are divided into two teams (the Red and Gold teams) which each have student captains in the categories of script, drama, choral, dance, drill, props, publicity, media, fashion, historian, house manager, and stage tech, as well as two overall producers. A neutral ("White") team also participates, made up of ASB members as well as representatives from the junior and senior classes. The White Team helps to facilitate the logistical portion of the production and announces the winner at the end of the last performance. The goal of the annual Red & Gold competition is to feature talents of students but also to instill leadership skills and promote team work across all grade levels.

Rosary offers a needs based scholarship program as well as scholarships in various areas to incoming freshman students.