During the final credits scene of the last episode of Jujutsu Kaisen, we see that Mei Mei and Todo Aoi are presenting their recommendations to Principal Gakuganji of Kyoto Jujutsu Tech, who is also head of the conservative, for promoting to Grade 1 sorcerers some of the students who participated in the recent Sister-School Goodwill Event.
As far as I can tell, it is implied that Mei Mei is a teacher at the Kyoto school, since during the Goodwill Event she was observing the students along with many other faculty. So, it makes sense that her recommendations for promotion are being concerned.
However, Todo Aoi is a third year student at Kyoto Jujutsu Tech who, in fact, participated in the Goodwill Event. So, why are his recommendations being considered? From the explanation in episode 15, it seems to be implied that it is the faculty that make recommendations for promotion; in particular, it is mentioned that they cannot recommend their own students.
So, why are Todo's recommendations for promotion to Grade 1 sorcerers being considered? Is it because, as Zenin Mai mentions in episode 8, Todo is himself a Grade 1 sorcerer, and Grade 1 sorcerers are also possibly allowed to make recommendations? Or, is there more to Todo than meets the eye?