There is a part of the ballroom world dedicated to college students. These chapters are typically clubs or teams that have an interest in ballroom dancing. Teams hold fundraisers, social events, and ballroom dance lessons. Ballroom dance teams' goals are to have fun and learn to dance well. There is a strong focus on finding a compatible dance partner and bonding with teammates. There is also a competitive side to collegiate ballroom - collegiate teams often hold competitions and invite other teams to participate.[12] These competitions are often run with many of the same rules are regular amateur competitions as outlined above, but are usually organized entirely by collegiate teams. Examples include the MIT Open Ballroom Dance Competition, Purdue Ballroom Classic and the Harvard Invitational.Other dances sometimes placed under the umbrella "ballroom dance" include Nightclub Dances such as Lindy Hop, West Coast Swing, Nightclub Two Step, Hustle, Salsa, and Merengue. The categorization of dances as "ballroom dances" has always been fluid, with new dances or folk dances being added to or removed from the ballroom repertoire from time to time, so no list of subcategories or dances is any more than a description of current practices. There are other dances historically accepted as ballroom dances, and are revived via the Vintage dance movement.