Judo was started by a Japanese educationalist, Jigoro Kano, in 1882. Although only 22 years old, Kano saw how the skills of ju-jitsu (a Japanese martial art) could be adapted to become a safe system of physical education, with a philosophy designed to bring people together as healthy individuals both physically and psychologically.
“Judo is the way of the highest or most efficient use of both physical and mental energy. Through training in the attack and defence techniques of judo, the practitioner nurtures their physical and mental strength, and gradually embodies the essence of the Way of Judo. Thus, the ultimate objective of Judo discipline is to be utilized as a means to self-perfection, and thenceforth to make a positive contribution to society.”
New IJF Rules for next Olympic cycle
Other resources:
Modern Approach to Officiating Webinar (featuring Deepali Mistry!)
In Victoria children under 9 years old use modified rules with additional safeguards and educational aspects. The age of a contestant is their age on December 31 in the year of the competition. Competitions are conducted in accordance with the Victorian Sporting code
The fit, measurement procedures and markings only generally apply
The rules and Referee accreditation for No Limits Judo competition.
National Events are held in accordance with the National Sporting code, which is available from the JA website under Resources.
KATA COMPETITION RULES
Of the 10 listed Kodokan Kata, the IJF conducts competition in 5: Nage-no-Kata, Katame-no-Kata, Kime-no-Kata, Ju-no-Kata and Kodokan Goshinjutsu. Kata for training are: Koshiki-no-kata, Itsutsu-no-Kata, SeiryokuZenyo-KokuminTaiiku, Joshi-Goshinho, Go-no-Kata. JVI conducts competition in the same 5 Kata as the IJF plus a Junior Nage-no-Kata of the first 3 groups only.
Note: This is Kata for Competition, not grading.