In Trinidad and Tobago and most Caribbean countries, it is traditional for schools to hold a dance at the end of the CXC/GCE Advanced Level examination period. This is thrown simultaneously for fifth form and upper sixth form students during the months of June or July after the school's official graduation ceremony. It is colloquially referred to as "grad" or "gradz". Most "gradz" are held in popular clubs, hotels, halls or simply on the school's grounds. Most schools allow students to bring dates, and a formal dress code is usually in effect.