Catholic Brother and St. Mary's International School teacher Benoit Lessard, who has been accused of molesting boys on annual school trips to Yamanashi Prefecture, died of cancer in 1980 aged 64. The summer tradition of sixth-grade students from St. Mary's in Tokyo spending a few days at the Seisen-Ryo complex, aka the KEEP Camp, in the Yamanashi resort area of Kiyosato died with him.

Lessard's replacement as sixth-grade homeroom teacher was a man named Don Andrews. Andrews, a layman rather than a Catholic Brother like Lessard, had worked under Lessard as a student teacher until the latter's death, after which Andrews was instated as a full-time teacher.

Although there have been no allegations of sexual abuse made against Andrews by former St. Mary's students, his record after leaving the school is far from pristine.