|The hierarchical structure of aikido follows substantially
the ranking system adopted by almost all the other major martial arts.
The students of the art are divided into two categories:
i) Students of kyu rank
ii) Students of dan rank
The founder of the art (O' Sensei), his son (the late Doshu Kisshomaru
Ueshiba), and his grandson (the present Doshu, Moriteru Ueshiba),
according to Japanese custom, are above the ranking system. The
students who hold dan rank from 1st dan upward, wear the black belt
over their uniforms (gi) and under the divided skirt or trousers
*In Aikido Federation (Singapore) dojos, female students who have passed their grading are allowed to wear the hakama. However, the colour
of the hakama is restricted to blue for these students, as the traditional
black hakama is worn only by students who have attained dan ranking
(regardless of gender).
The following is a table of the categories as well as the ranks
of the Aikido hierarchy adopted by Aikido Federation (Singapore).