Board Thread:Boruto: Naruto the Movie/@comment-26010916-20150806143152/@comment-3965545-20150811181122

People have started at age 4 in the academy too. It's whenever the parent decides to enroll them. Only once they complete all levels of the curriculum and then pass the graduation exam can they become Genin.. Itachi and Kakashi did it in a year and I don't believe ANYBODY else has replicated that feat.