Sister Mary Clouser, formerly Sister Mary Roger, spent 27 years serving in education. Her ministries included St. Agnes High School, Rochester; Sacred Heart Cathedral, Rochester; St. John the Evangelist, Greece; St. Alphonsus, Auburn; Blessed Trinity, Auburn; St. Theodore, Rochester; and Nazareth Academy, Rochester.

Following her time in education, Sister Mary studied physical therapy, serving at Genesee Hospital, Rochester; and Rochester General Hospital, Rochester as a Physical Therapist Assistant.

On the occasion of her 60th Jubilee celebration in 2024, Sister Mary reflected, “My loving God has surely blest me in abundance. As Jimmy Stewart would say, ‘It is a wonderful life!’”