Classification is simply a structure for competition. Not unlike wrestling, boxing and weightlifting, where athletes are categorized by weight classes, athletes with disabilities are grouped in classes defined by the degree of function presented by the disability.
Traditionally there are athletes who belong to six different disability groups in the Paralympic Movement: amputee, cerebral palsy, visual impairment, spinal cord injuries, intellectual disability and a group which includes all those that do not fit into the aforementioned groups (les autres).
Classes are determined by a variety of processes that may include a physical and technical assessment and observation in and out of competition. The classes are defined by each sport and form part of the sport rules.
Classification is an ongoing process. When an athlete starts competing, they are allocated a class that may be reviewed throughout the athlete's career. Sports certify individuals to conduct the process of classification and these officials are known as classifiers. (From CPC website)
International classifiers have either a degree or equivalent qualification in medicine, physiotherapy, occupational therapy, physical education or exercise/sport science, or have nationally recognised athletics coaching qualifications or have competed at an international level. Please note that possession of one or more of these qualifications is necessary but may not be sufficient to become a classifier. For more information on how to become a classifier please contact the provincial or multi-sport organization that governs the sport of interest.