Board Thread:Theories and Speculation/@comment-25449165-20161013231440/@comment-27821571-20161014211249

QuakingStar wrote: No, Gaara was promoted to Chunin then presumably Jonin, then Kage between part 1 and 2. Since they don't list Jonin promotions as stats in the DB's we can't say otherwise.. Jonin's are also appointed as such.

He definitely wasn't promoted to a Jonin, and the "Chunin promotion age" information on his infobox more than likely refers to when he become Kage (he likely simultaneously become a Chunin when he become a Kage), as there is no reason why he'd suddenly become a Chunin.