I was a peer mentor (that's what my school called it) for the new kids, in England secondary school (like high school but we do our finals a year earlier than Americans) the new year sevens (6th graders) are the youngest, year eleven (tenth grade) is the oldest but there's sixth form college which is like eleventh grade
I'm in year nine (so like eighth grade) which is when you can be a peer mentor for a few months to look after the small kids and once I accidentally took an ENTIRE F**KING CLASS OF KIDS to the wrong classroom 😭😭