TORONTO — St. Michael’s College School had long been known in Toronto as a beacon of tradition, Catholic faith and elite hockey — until last week.

One hazing video emerged online. Then another — this one capturing a young student being pinned down by schoolmates in a locker room and sexually assaulted with a broom handle.

The Toronto police arrested six students, ages 14 and 15, this week and charged them with offenses related to sexual assault. Since the arrests, the police have received two more videos, bringing the total count of episodes to six. And they expect more.

The videos and arrests have rocked the institution, prompting the resignations of both its president and principal, and torn a rift between students’ parents and the school’s deeply knit alumni, many of whom identify themselves as St. Michael’s Men long after graduating, wearing their pride like their antique leather football jackets.