In the 1970's, a group of students led by former Spanish teacher Lou Villar developed what became a $100-million dollar worldwide drug smuggling operation.[8][9]
In 2008, the school was named a National Blue Ribbon School. CHS was the only school in San Diego County to win the award.[10] In 2016, CHS was ranked 433rd nationally and 70th amongst California high schools in the USNews list of "Best High Schools", out of more than 27,000 public high schools.[11] It was awarded the New American High Schools designation in 1998.[12] It offers Advanced Placement Classes.
In 2023, the football team added girls to the roster for the first time.[13]
Coronado Sports, with the exception of Water Polo, Swimming, Tennis, Volleyball, Golf, Basketball, Cross Country, Baseball, and Softball are played at Niedermeyer Field which was completed in 2000.[14] The Field, which hosts Football, Boys and Girls Soccer, and Boys and Girls Lacrosse was upgraded to field turf in 2005. The campus includes an aquatics complex named the Brian Bent Memorial Aquatics Complex.,[15] Three Coronado High School graduates played on the United Stateswaterpolo team for the 2008 Olympics. In 1996, Adrian Taufaasau, a Coronado High quarterback, was tackled in a game and suffered what later was termed blunt force trauma to his head and neck, dying two days later.
In 2007, Tennis Coach and Teacher Robbin Adair coached the Islanders to his 1,000th win.
On June 20, 2021, the boys' basketball team forfeited the CIF Division 4A Regional Basketball Championship after members of the team threw tortillas at their predominantly Latino opponents from Orange Glen High School during a victory celebration after the championship game.[16][17][18] The move, which had previously been condemned by the League of United Latin American Citizens,[19] prompted an investigation by the San Diego County’s Human Relations Commission.[20] The Coronado Unified School District apologized for "racism and classism"[21] and fired head coach J.D. Laaperi over the incident.[22][23] A 40-year-old alumni of the school who had no children of his own on the team or at the school claimed that he distributed the tortillas to team members and cheerleaders because tortilla throwing was a tradition at UC Santa Barbara where he and Laaperi attended at the same time.[24][25] The UCSB Alumni Association has said tortilla throwing has had to be banned because of game interruptions and "associations with racist ideology."[26] This followed an effort in 2020 to ensure that the school districts curriculum not be updated to include a focus on racial justice.[27] On July 6, the school board voted to "initiate litigation" thereby "enabling the Superintendent to enter the appeal process within the 15 day window," claiming their independent investigation "found no evidence warranting forfeiture of the title."[28][29]