Grossmont–Cuyamaca Community College District

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.

El Cajon Transit Center is a San Diego Trolley station served by the Orange and the Green lines in the San Diego suburb of El Cajon, California. The station is a major commuter center for the large suburb, and is the convergence of multiple local and regional bus routes operated by the Metropolitan Transit System and Greyhound Lines.

El Cajon ( el kə-HOHN, Latin American Spanish: [el kaˈxon]; Spanish: El Cajón, meaning "the box") is a city in San Diego County, California, United States, 17 mi (27 km) east of downtown San Diego. The city takes its name from Rancho El Cajón, which was named for the box-like shape of the valley that surrounds the city, and the origin of the city's common nickname "the Box".

Grossmont High School is a public high school located in Eastern San Diego County, California. Opened in 1920, it is the oldest public high school in East County and the first of twelve high schools currently in the Grossmont Union High School District. The school has an approximate enrollment of 2,800 students.Grossmont High School has been accredited by the Western Association of Schools and Colleges (WASC) since 1962. The current accreditation is valid through 2020. Grossmont High School was recognized as being a California Distinguished School for the scholastic year of 2008–2009. Its mascot is the Foothiller, so chosen because at the time of the school's construction, east county was much more isolated from the rest of San Diego than it is today and was often referred to as the boondocks or the foothills.

Parkway Plaza is a shopping mall in El Cajon, California. The mall's anchor stores are Crunch Fitness, Dick's Sporting Goods, Ashley HomeStore, Bob's Discount Furniture, Burlington, Extra Space Storage, Walmart, Regal Cinemas, and JCPenney.

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).

Casa de Oro-Mount Helix is a census-designated place (CDP) in the East County region of San Diego County, California. The CDP encompasses several unincorporated neighborhoods near the cities of El Cajon and La Mesa and the CDP of Spring Valley. Locations in the northern (Mount Helix) part of the CDP use La Mesa addresses, while locations in the southern (Casa de Oro) part use Spring Valley addresses. Informally, Casa de Oro is often considered to be a part of Spring Valley. The population was 18,762 at the 2010 census, down from 18,874 at the 2000 census.

Arnele Avenue station is a San Diego Trolley station served by the Orange and Green Lines in the San Diego suburb of El Cajon, California. It serves as the eastern terminus of the Orange Line. The station also has as a small park and ride that serves the surrounding residential community and also allows for access to a large commercial strip. Parkway Plaza, a major shopping mall, is within walking distance of the station.

The Seminary of Mar Abba the Great is a Chaldean Catholic seminary located in El Cajon, California. The seminary is the first and only Chaldean Catholic seminary outside of Iraq. The seminary is part of the Eparchy of St. Peter the Apostle, a diocese which encompasses 19 of the westernmost states of the United States. The seminary was consecrated by Mar Sarhad Yawsip Jammo on July 25, 2008. Fr. Andrew Younan was appointed as the seminary's rector and Mar Bawai Soro was assigned to the post of spiritual director for those discerning the priesthood. The seminary proper has dorms for as many as 10 men, and there is another building on the land which is the Institute of Mar Abba the Great which is home to a chapel, library, and a classroom.

Fletcher Hills is a neighborhood in El Cajon and La Mesa, California.

Bostonia is a neighborhood in San Diego County, California, comprising part of the northeastern portion of the city of El Cajon, as well as adjacent unincorporated areas of San Diego County. The portion of Bostonia that lies outside the El Cajon city limits is classified as a census-designated place (CDP) for statistical purposes by the United States Census Bureau. The population of the CDP was 15,379 at the 2010 census, up from 15,169 at the 2000 census.

ASTREA is an acronym for Aerial Support To Regional Enforcement Agencies, the air support unit of the San Diego County Sheriff's Department. ASTREA Base is located at Gillespie Field Airport (IATA: SEE, ICAO: KSEE) in El Cajon, California.