[2] Though the original building was renovated in the late 1990s to make room for new facilities, it has undergone numerous additions and a name change throughout its history.

Additions to the north wing include driver ed and fine arts facilities, a new gym, lockers, 24 classrooms, and a commons area.

According to the ACHS website: "The "A" in the center stands for Antioch (naturally), and the circle surrounding it represents the unity of the students and athletes who wear the symbol.

Fred Willman explained in his in-depth book examining Illinois high school nicknames, "Why Mascots Have Tales," "The word Sequoit is a form of spelling of the Iroquois Indian word Sa-da-quoit, which was the name the Iroquois Indians gave to a stream that flows through Oneida County in New York state.

The Sequoit logo and spirit have remained intact throughout the ages, even though similar Native American-inspired team names and mascots have been changed.

[citation needed] Boys sports include baseball, basketball, cross country, football, golf, lacrosse, soccer, swimming, tennis, track, volleyball, and wrestling.

Girls sports include basketball, bowling, cheerleading, cross country, dance, field hockey, golf, gymnastics, soccer, softball, tennis, track, and volleyball.