Normal Minimum Training Times between grades

Grade Range Normal minimum times between gradings
Below 3rd Kyu (Brown Belt) Normally 3 months training twice a week
3rd Kyu & 2nd Kyu Min 3, normal 6 months training twice a week
1st Kyu to 1st Dan Min 6, normal 12 months
1st Dan to 2nd Dan 2 Years and over 16 years old.
2nd Dan to 3rd Dan 3 Years
3rd Dan to 4th Dan 4 Years
4th Dan to 5th Dan 5 Years
6th Dan and above Very Exceptional

The examiner, in conjunction with the Club Sensei, can use discretion for the kyu waiting times.
Only Kanazawa kancho can vary the Dan Grade requirements.
Grading examiners can vary up to two of the kihon / kumite grading requirements.