Kyoshi - This title is usually conferred at the Rokudan or Shichidan, depending on the system and sometimes referred to as lord over Sensei, Shihans, and Renshi. Also another definition is, the "inside" is correct, both the intention and action are pure. "Knowledgeable person."
Many people can train all their lives and not receive these titles. They are awarded for special accomplishments within the field of martial arts.