The classification rules of the International Federation for Table Tennis state that athletes with a physical impairment and athletes with intellectual impairment are eligible to compete in the sport at the Paralympics.
Classification also groups athletes in classes, defined by the degree to which they are limited in their ability to perform activities within that sport. In Table Tennis there are eleven classes and they can be described as follows:
1–5: athletes with a physical impairment that affects their legs who compete in a sitting position, the lower the number, the greater the impact the impairment has on an athlete’s ability to compete
6–10: athletes with a physical impairment who compete from a standing position, the lower the number, the greater the impact the impairment has on an athlete’s ability to compete
11: athletes with intellectual impairment
Read an overview of classification at the London 2012 Paralympic Games