DCI has two classes corps can compete within. The first, and greater one is "World Class." in World class, all of the corps must have no more than 154 members, although how those members are divided is up to the leaders of that corps. The corps in world class also get more money from DCI, and are allowed to vote on big decisions in DCI, like show times, rules, and money. the corps in world class also spend a lot of time touring the country, and go to a lot of places. The second, and lesser class is "Open Class." in Open class, the corps can have any number of members between 1 and 154. These corps do not get as much money as world class corps, and do not have as much say in decision making. They also spend less time on tour, and they also stay closer to where their headquarters is. Sometimes, corps can move from open class to world class if they performed very well the previous year. If a group wants to start a corps, they will always start out in open class.