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    There are 4 different Corps group events, namely
- Baton Twirling Corps

This is a corps in which each member must have one and only one baton.

- Show Corps/Twirling Corps with Props

A corps emphasizing total development of a theme.

- Show Corps/Twirling Corps with Props and/or Scenery

A corps emphasizing total development of a theme.

- Parade Corps – Recorded & Live

A corps performing a routine suitable for a street parade with a baton.

    In addition, there are 4 group of solo Corps events, namely
- Color Guard Solo
- Music Section
- Drum and Mallet Solo, Duet, Trios and Ensembles
- Corps Member of the Year


Competition age -an individual's actual age on the previous September 1st


    LARGE CORPS - a corps with a minimum of 21 members

    SMALL CORPS - a corps with a maximum of 20 members

    JUVENILE CORPS - a corps with an average competition age less than 11.99

    JUNIOR CORPS - a corps with an average competition age less than 14.99

    SENIOR CORPS - a corps with an average competition age is 15.0 and older

    BEGINNER CORPS - a corps where at least 50% of the members have not competed in 7 advanced corps competitions

    INDIVIDUAL EVENTS - divisions are defined as 0-9 juvenile, 10-12 pre-teen, 13-15 junior, 16+ seniors

Mount - any lift or form that is two stories or more
Music - sounds having rhythm or melody (includes singing, chanting, and noises in a set rhythm)

Prop - any piece of equipment or material that is not a baton or piece of authorized equipment

Twirling Time - timing while 10 or more members twirling one, two, three batons or more at the same time. Also included are aerial exchanges, momentary stops of 1 or 2 counts when part of a twirling section, twirling while marching, duet tricks when executed as a result of a toss (about 8 counts), and peel-offs while some type of twirling continues and not just poses. If 10 twirlers are twirling and one drops a baton, timing continues while the person is in the process of picking it up.

Unit 2 or more members

Questions and rule clarifications

When does set-up time start?
When the announcer acknowledges that the corps can take the floor
What kind of props are used in twirling corps?
Scenery, backdrops and props are not allowed at all. This includes changing, altering or removing articles of clothing during the performance. Example-scarfs, hats , capes, skirts ,etc. cannot be used in a production number. A vest or shirt cannot be taken off and reversed. A skirt cannot be used to make a sign. Glasses, streamers, etc.  cannot be taken out of a pocket. No "gimmicks" are allowed. Violation is a 2 point penalty.
What is a boundary penalty in corps?
A two point boundary penalty is accessed when a unit or section goes out of the floor markings during the performance. An individual is penalized only when the person leaves the floor due to improper choreoghraphy. An individual is not penalized for going out of bounds to pick up a dropped baton, accidentally stepping on a line,  or any reason that is just an individual error.
What must the dimensions of a flag be in flag corps?
A flag shaft must have a minimum of 30 inches in length and be at least one-half inch in diameter. A pike is construed to be a pole at least five feet in length with a piece of material attached to be used as the flag.