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Open Class corps have a minimum of 30 members up to a maximum of 150. Most Open Class corps will follow an abbreviated tour schedule compared to World Class corps with memberships made up of a mixture of high school and some college-aged students.
The criteria to earn Open Class status involves a combination of factors that include organizational stability, strength of program, number of participants, travel capabilities, and financial stability. An evaluation process assists new or re-emerging corps petitioning for Open Class status after which a recommendation is presented to the Open Class Advisory Committee for approval.

New London, CT

Salt Lake City, UT

Concord, CA

Concord, CA

Greensboro, NC

Dubuque, IA

Tri-Cities, WA

Old Bethpage, NY

San Diego, CA

Bakersfield, CA

Houston, TX

Tampa Bay, FL

Buena Park, CA

Kalamazoo, MI

Sherbrooke, QC

Lafayette, LA

Tempe, AZ

Burlington, NJ

Anoka, MN

Oregon, WI

Mobile, AL

Nashua, NH

Santa Clara, CA

Long Beach, CA

Riverside, CA
International

Corps from other countries, where competitive eligibility rules, and instrument restrictions vary from those governing DCI, may compete at DCI events.
Should these corps qualify for a finalist position, or advance to Semifinals or Finalists position at the World Championships, they would not displace a Corps which fulfills all DCI requirements of DCI competition.

Birmingham, UK

Calgary, Canada

Kidsgrove, Staffordshire, UK