Yes how he came to teach at the school as well as how long he has been teaching.

Th school is around a million years old, The headmaster is the same one fro the last 600,000 years which is my main character which is an angel king named Metatron who set up the school and has helped all races for ages. He is well known throughout the history of the scribe of god and the bridge between heaven and earth and being the calmest and most peaceful o the angels. he was also one of the rarest of angels because he was the first human to become an archangel.