Seminary of Mar Abba the Great

Rancho San Diego is a census-designated place (CDP) in the East County region of San Diego County, California. The population was 21,858 at the 2020 census, up from 21,208 at the 2010 census. The area was developed as subdivisions beginning in the 1970s.

Located in Rancho San Diego, Valhalla High School is a public high school operated by the Grossmont Union High School District with an enrollment of 2,112 students. The school is characterized by its school colors, orange and white, going by the nickname Orange Nation. During its existence, the school has won the California Distinguished School Award in both 2001 and 2003, and is also accredited by the Western Association of Schools and Colleges. The school is currently directed by principal Joshua Johnson and three assistant principals. Several programs are available to students, including ASB, marching, jazz, and orchestra bands, drama, color guard, cheer, dance, and athletics such as football and baseball, among other programs.

St. Peter Cathedral is a Chaldean Catholic cathedral located in El Cajon, California, United States. It is the seat for the Eparchy of St. Peter the Apostle.

Chaldean Eparchy of Saint Peter the Apostle (Latin: Eparchia Sancti Petri Apostoli urbis Sancti Didaci Chaldaeorum) is a Chaldean Catholic Church eparchy of the Catholic Church in the Western United States. It practices the Syro-Oriental Rite in the Syriac/Arameic language. It is exempt, i.e. immediately subject to the Holy See, not part of any ecclesiastical province. Its cathedral episcopal see is St. Peter's Chaldean Catholic Cathedral, located in El Cajon, California.

St. Michael's Chaldean Catholic Church is a Chaldean Catholic church located in El Cajon, California, United States. It is a church part of the Eparchy of St. Peter the Apostle. The church plays a central role in the lives of Iraqi immigrants and refugees, providing them with a sense of community, solace, and a place to worship. This church, among other Chaldean Churches in the area, struggle to accommodate the increasing number of worshippers, with crowded services being a common occurrence.

El Granito Springs was a natural spring in the vicinity of present-day La Mesa in eastern San Diego County, California, United States. The springs were named for their location in a granite outcropping near the San Diego River.

The Pacific Coast Athletic Conference (PCAC) is a college athletic conference that is affiliated with the California Community College Athletic Association (CCCAA) and includes community colleges in the San Diego region of California. The PCAC has won numerous state championships in the CCCAA.

Cuyamaca College is a public community college in Rancho San Diego, California. It is part of the Grossmont-Cuyamaca Community College District and the California Community Colleges System. Along with Grossmont College, it serves the eastern suburbs in the San Diego area. Cuyamaca College opened in 1978 and now offers 81 associate's degree programs and 66 training certification programs to approximately 8,500 students. Many of the college's students transfer to the University of California, San Diego or San Diego State University to complete their bachelor's degrees. Cuyamaca's mascot is the coyote.

El Cajon Valley High School (ECVHS) is a comprehensive public secondary school located in El Cajon, California, which is in the eastern county of San Diego, and serves students in grades nine through twelve. Established in 1955, El Cajon Valley is the third of twelve high schools to be built in the Grossmont Union High School District. ECVHS is the home of the Braves. El Cajon Valley High school is accredited by the Western Association of Schools and Colleges (WASC).

The Grossmont–Cuyamaca Community College District is a California community college district comprising two colleges, Grossmont College and Cuyamaca College that serve about 28,000 students a year. Grossmont College is located in El Cajon, California and Cuyamaca College is located in Rancho San Diego, California, and primarily serves East San Diego and East County communities.

The Grossmont Union High School District (GUHSD) is a public school district located in eastern San Diego County, California, and serves high school, adult school, and Regional Occupational Program (ROP) students in the cities of El Cajon, Lemon Grove, and Santee; the unincorporated communities of Alpine, Casa de Oro, Crest, Dehesa, Dulzura, Jamul, Lakeside, Mount Helix, Rancho San Diego, and Spring Valley; most of La Mesa, and parts of San Diego. Formed in June 1920, the union high school district is overseen by a five-member governing board and operates 13 high schools (nine regular, three charter, and one continuation); a regional occupational program (ROP); and special education and adult education services. The day-to-day operations are managed by the superintendent, who is appointed by the board. The Grossmont Union High School District utilizes a strategic plan that includes a mission statement, district guidelines, core values, and annual goals and objectives. The district's schools are accredited by the Western Association of Schools and Colleges (WASC). Four of the district's high schools—Helix, Mount Miguel, Santana, and Valhalla (twice)—have been recognized as a California Distinguished School by the California Department of Education. In March 2001, the district and two of its high schools—Santana and Granite Hills—made nationwide headlines in the US when, in a span of seventeen days, a total of two students were killed and twenty students and two teachers were wounded when two students, in separate incidents, opened fire at their schools.

Granite Hills High School is a California Distinguished School, public and comprehensive high school located in El Cajon, California and serves students in grades nine through twelve. Opened in 1960, Granite Hills is one of thirteen high schools in the Grossmont Union High School District. GHHS is the home of the Eagles. Granite Hills High School has been an IB World School since July 2001.