Originally Posted by tutex
my judo master is a 7 degree black belt is this really rare?
I wouldn't say rare but definitely not common either.
In japan they have more senior ranked guys say at the Kodokan, fair enough as many train everyday and it has many of the best teachers in the world in one school.
It's uncommon, not rare but very impressive. That being said, you don't see 7th dans that often.