The head of a Kyoto-based kanji promotion body has presented the education ministry with plans on how it will improve its operations following allegations that the organization engaged in improper business practices in the administration of aptitude tests.

Noboru Okubo, director of the Japan Kanji Aptitude Testing Foundation, said Wednesday he will step down from the foundation's board in his first public appearance since the revelation in January of the problems with his organization.

The 73-year-old Okubo said at a press conference held after submitting the improvement plan that was resigning to demonstrate his "moral responsibility."