Adlai E. Stevenson High School (AESHS), commonly called Stevenson High School (SHS), is a four-year public high school located in Lincolnshire, Illinois, United States. It is named after Adlai E. Stevenson II, the 31st Governor of Illinois.

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In 1964, growing disagreement between the western (Lake Zurich) and eastern (current Stevenson) sections of the district emerged regarding the school's direction. Before the opening of Stevenson, the students in the Stevenson area attended Ela-Vernon High School in Lake Zurich. Stevenson was planned to be a second school for the growing district, but the western side (Lake Zurich) of the district decided to build their own district. Adlai E. Stevenson High School opened in September 1965. This left Stevenson with an unfinished building, no board or administration, and no faculty. When Stevenson opened to 467 students and 31 teachers in 1965, the building was not carpeted, the library was empty, most classrooms were without desks and athletic fields were non-existent, as most of the school furniture had been shipped to Prairie View, Texas instead of Prairie View, Illinois.

In the 1980s, the release of "A Nation at Risk" and the arrival of Richard DuFour as school principal marked pivotal events. During the 1980s and 1990s, the school's student activities program expanded, providing over 100 clubs and teams for students. By the late 1990s, intense student competition led to the formation of a task force to find solutions to issues like grading system manipulation. In 1992, a community referendum determined that Stevenson would remain the district's only high school, with 52% supporting this option. In 1995, Stevenson underwent its largest expansion, growing by more than 50% with a $25 million project.

Stevenson has grown since its opening to become one of the largest high schools in the area. The school has undergone various additions over the years, the first being in 1970 where the school gym and pool were renovated. To accommodate the increasing student population, another round of remodeling occurred in the mid-1990s. After the addition of the three-level east building in 1995, the physical size of SHS increased to more than six times its original size of 113,000 square feet. The new east building included 60 new classrooms, a new Performing Arts Center (PAC), the Patriot Aquatic Center, Field House, and the Technology Center, among other projects as well. Also built was a new indoor walkway ("The Link") between the original west building and the new east building.

In 2002, a referendum seeking an increase in the education tax rate received nearly 70% support from the community, stabilizing the district's finances. Since 2002, DuFour's retirement year, he had become a leading voice for school reform within the education community until his death in 2017. In April 2008, Education Week featured Stevenson High School in an article about its successful implementation of professional learning community practices.

In 2004, the main entrance to the school was completely rebuilt and transformed into another commons area now known as "The Point." Other renovations that year included more fine arts areas around the band, choir, and orchestra rooms in the west building. Around 2008, many of the athletic fields were expanded and the football field received new turf. In that same year, the original auditorium was renovated as well.

In the 2005–06 school year, Stevenson had its highest enrollment of 4,573 students. Between the 2005–06 and 2014–15 school years, each school year saw progressively declining enrollment in the student body. In the 2014–15 school year, Stevenson had its first enrollment increase since the peak in the 2005–06 school year. Stevenson's enrollment was 4,337 for the 2018–19 school year, and enrollment is expected to surpass 4500 by 2020.

In 2011, the school library and student resource center in the old/west building were renovated for the first time in Stevenson's history. The project was finished in 2015 when the removal of the two lecture halls was completed to make way for the Quiet Learning Center (QLC). In addition to the new ILC/QLC, the photography studio was also renovated in the summer of 2013.

In 2019, the school added an extension to the east building, including 22 new classrooms, conference rooms, a green roof and flower garden, multiple living walls and solar panels, with the intent of making the new addition a net-zero building.

In 2020, Stevenson began planning for an additional expansion, with new athletic courts, an artificial turf playing field, a larger running track, an area for exercise equipment, and other features to be built in the enlarged field house. This addition was finished in August 2022.

In 2023, the demographics were: White: 46.6%, Asian: 39.3%, Hispanic: 9.0%, Black: 1.7%, Two or More Races: 3.2%, and American Indian: 0.2%.

The school serves students in the area's District 125 coming from Lincolnshire, Long Grove, Prairie View, portions of Buffalo Grove, Mundelein, Kildeer, Hawthorn Woods and smaller portions of Vernon Hills, Lake Zurich, Riverwoods, Bannockburn, and Mettawa.

Name of feeder school	Name of feeder school's school district
Daniel Wright Junior High School	Lincolnshire-Prairie View School District 103
Aptakisic Junior High School	Aptakisic-Tripp School District 102
Twin Groves Middle School	Kildeer Consolidated School District 96
Woodlawn Middle School	Kildeer Consolidated School District 96
Fremont Middle School	Fremont School District 79
West Oak Middle School	Diamond Lake School District 76

In November 2009, a dispute erupted between school officials and the student newspaper, The Statesman, regarding censorship of stories. The administration stopped publication of the November 20 issue, objecting to stories regarding drugs, teen pregnancy, and shoplifting. When students wanted to leave the front page blank in protest of the censorship, the officials instead required the students to produce other stories approved by the administration. The Stevenson public information officer released a statement November 20 stating the administration did not think anonymous sources discussing alleged illegal activity was fit for print.

The Chicago Tribune, in a November 26 editorial, said the school was wrong to force students to produce administration-approved stories. "This isn't editing, it's censorship," wrote columnist Zak Stambor. The Society of Professional Journalists' Freedom of Information chairman called the censorship "immoral, un-American, irresponsible and not fit for education."

Following the censorship fiasco, 11 of 14 Statesman staffers — and all the paper's top editors — resigned from their positions at the start of the spring 2010 semester.

In February 2012, the school administration initiated an investigation into marijuana sales at the school, during which the cellphones of students suspected of marijuana sales were confiscated, and the text messages stored on the phones were read. The American Civil Liberties Union of Illinois described the incident as a "fishing expedition", while school officials stated they were "perfectly within our rights". In one instance a student was suspended for five days and barred from participating in extracurricular activities because he refused to provide the password to his cellphone. The probe resulted in two arrests on misdemeanor drug charges.

In 2017, three female students were put on academic suspension when a video surfaced of a student attacking another student on a bus. The student was later charged in juvenile court for aggravated battery.

In January of 2020, a black student at Stevenson was allegedly targeted and disrespected by dean Nick Valenziano on a recorded video. This led to student protesting and an uproar in the Stevenson community. School administrators accepted Valenziano's resignation around June of 2020, and hired a diversity director to address racial issues within the school.

The Stevenson Patriots compete in the North Suburban Conference. The following is a list of sports Stevenson lists for the 2023–24 school year:

Stevenson High School is a member of the IHSA, the athletic teams are stylized as the Patriots. Many of its teams are top-ranked nationally and have a history of producing collegiate and professional athletes.

The following teams have won their respective IHSA sponsored state championship tournament or meets:

Sporting Achievements
Sport	Achievements	Years
Football	State Champions	2014–2015
Boys Basketball	State Champions	2014–2015
Girls Badminton	State Champions	2016–2017
Boys Gymnastics	State Champions	2001–2002, 2002–2003, 2003–2004, 2009–2010, 2014–2015
Girls Basketball	State Champions	1994–1995, 1995–1996, 2021–2022
Girls Gymnastics	State Champions	2000–2001, 2001–2002, 2002–2003, 2003–2004, 2008–2009
Girls Water Polo	State Champions	2015, 2017, 2018, 2019, 2023, 2024
Boys Bowling	State Champions	2016
Boys Water Polo	State Champions	2017, 2021
Patriettes	State Champions	2017, 2020, 2021, 2024
Fencing	Midwest High School Championships	2003, 2006, 2007, 2009, 2011, 2017, 2023, 2024
Boys Ice Hockey	AHAI State Champions	2021–22
	National Runners-Up	2021–22
Girls Tennis	State Champions	2017

Academic Achievements
Event	Achievements	Years
Science Olympiad	National Champions	2023
Chess Team	State Champions	2007–2008, 2021–2022
Scholastic Bowl	State Champions	1999–2000, 2004–2005, 2009–2010, 2017–2018
Debate Team	Harvard National Champions	2008, 2011, 2019
Math Team	State Champions	1991, 2023

Stevenson High School is one of the only high schools in the country to receive the United States Department of Education's "Excellence in Education" Blue Ribbon Award five times. In addition, Stevenson has been named one of America's top high schools by both U.S. News & World Report and Newsweek magazines, and has been named a National School of Distinction in Arts Education by the John F. Kennedy Center for the Performing Arts.

Niche ranked Stevenson as one of the best public high schools in America in 2017. In 2016, Niche gave A+ ratings in the following areas: academics, teachers, educational outcomes, health and safety, resources and facilities, sports and fitness, co-curricular activities, food service, and administration and policies.

Several national publications have regularly included Stevenson in their lists of America's best public high schools. Stevenson was the top-ranked open-enrollment public high school in Illinois in 2021, 2015, and 2014 in U.S. News & World Report, and was the top-ranked open-enrollment school in Illinois in the Washington Post’s rankings in 2014, 2013, and 2012.

In 2021, U.S. News & World Report ranked Stevenson as 171st in national rankings and 6th in Illinois.

For the class of 2016, 99.9% attended college. In 2015–2016, 360 students were named Illinois State Scholars. In addition, there were 32 National Merit Semi-Finalists in the Class of 2016 and 38 Commended students.

• Megan Bozek – 2014 USA women's Olympic hockey player.
• Kyle Brandt – actor and media personality.
• Jalen Brunson – NBA basketball player (point guard) New York Knicks, 2024 All-Star, member of 2016 and 2018 NCAA champion Villanova Wildcats.
• Tamika Catchings – former professional basketball player, WNBA champion and 2011 MVP.
• Brad Cieslak – former NFL tight end for the Buffalo Bills and Cleveland Browns.
• Kevin Frederick – former Major League Baseball pitcher for the Toronto Blue Jays.
• Dylan Geick – wrestler, writer, and social media personality
• Ron Goldman – friend of Nicole Brown Simpson and one of the murder victims from the trial of O.J. Simpson.
• Hal Gordon – unofficial mascot for the Oakland Athletics, hotdog vendor, and economist.
• Andrea Jaeger – professional tennis player, Wimbledon and French Open finalist, who became a nun.
• Paul Juda - Olympic medal winning gymnast
• Holden Karnofsky – the chief executive officer of the Open Philanthropy Project and a co-founder and board member of GiveWell.
• Joe Lando – actor, known for the television series Dr. Quinn, Medicine Woman.
• Alison La Placa – actress, known for sitcoms Duet, Open House and The John Larroquette Show.
• Drew Mormino – NFL football player for the Miami Dolphins.
• Ted Musgrave – professional stock car racing driver.
• Maema Njongmeta - linebacker for the Wisconsin Badgers
• Aidan O'Connell – NFL football player (quarterback) Las Vegas Raiders.
• Matt O'Dwyer – former NFL offensive guard for the New York Jets and Cincinnati Bengals.
• Mosheh Oinounou (born 1982), former executive producer of CBS Evening News
• Danny Richmond – former professional ice hockey defenceman.
• Rex Ryan – analyst at ESPN, former NFL head coach for the New York Jets and Buffalo Bills.
• Rob Ryan – NFL assistant coach.
• Justin Smith (born 1999) - basketball player in the Israeli Basketball Premier League
• David Simon - professional basketball player in the Japanese B.League
• Gene Stupnitsky – head writer and executive producer of The Office. Television and film writer, director and producer.
• Kiki Van Zanten – women's soccer player, represented Jamaica in the 2023 FIFA Women's World Cup
• Lisa Wang – rhythmic gymnast, winner of the 2007 Pan American Games.
• Andy Wozniewski – former professional hockey player.
• Lauren Jiggetts – American Emmy Award-winning journalist and news personality currently with WGN-TV Chicago.

• Official Website