IHA offers about 50 clubs, organizations, extracurricular activities and honors societies. Some of these opportunities include C.A.R.E. (Christian Action Reaching Everyone), Student Council, an award-winning Mock trial team, both a Science League and Math League, Model United Nations, Junior State of America, the National Honor Society, National Art Honor Society, French Honor Society/Société Honoraire de Français, Spanish Honor Society/Sociedad Honoraria Hispánica, and Tri-M (Modern Music Masters). In addition, art, theater, and music related clubs are available for students to join, including an a cappella group, chorus, orchestra, jazz band and handbell choir.