Corporate Members
- Chicago Spotlight Inc.
- Grand Stage Company
- Hemmens Cultural Center
- IATSE Local 470
- Illinois Theatre Assoc.
- Intelligent Lighting Creations, Inc.
- Mainstage Theatrical Supply
- Maranatha Baptist Bible College
- Muskegon Community College
- Reed Entertainment Rigging and Engineering
- Theatrical Construction Services
- William H. Lord Inc.
- Woodstock Opera House
Organizational Members
- Adlai E. Stevenson H.S.
- Central Wis. Area Community Theatre
- Detroit Country Day School
- Frauenthal Center
- Grand Rapids Civic Theatre
- Indiana State University
- Logansport High School-McHale PAC
- Loyola Academy
- Purdue University
- Rock Valley College Theatre
- The Theatre School, DePaul University
- University of Wisconsin-Oshkosh Theatre
- University of Wisconsin-Whitewater Theatre
- Wayne State University
- Western Illinois University