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October 2, 2025Sister Kathleen (Mary Stephanie) Cusack grew up as the youngest of four in bustling Manhattan. Her journey toward religious life began at St. Michael’s High School, where she was deeply moved by “the love and respect the sisters had for each other and their dedication to their students.” That inspiration planted a calling she could not ignore.
For decades, Sister Kathleen brought the gift of education to countless students. She taught multiple grade levels in elementary school and inspired young minds in English and history at the high school level, including six unforgettable years at St. Lucy’s in Houma, Louisiana. Later, she embraced a new role as librarian at St. Helda and St. Hugh’s Episcopalian School in Manhattan — a place she cherished until a new calling brought her home.
“When the principal position at St. Michael’s became available, my deep connection to my alma mater led me back,” Sister Kathleen recalls. For 22 years, she led with dedication, surrounded by devoted teachers and students. Those years were rich with joy and growth — but also tested by tragedy. She still remembers the pain of 9/11, a moment that remains etched in her heart.
For Sister Kathleen, education was never just about facts and books. “I deeply cherish teaching little ones to read, introducing literature and history, and helping high school teens believe in themselves,” she reflects. Her mission was always rooted in more than teaching — it was about nurturing hope and faith.
Before retiring, Sister Kathleen returned to the library, serving at St. Joseph Seminary and St. Raymond Elementary School. Looking back, she feels profound gratitude.
“I am filled with gratitude for the tapestry of my life,” she shares. “I have been blessed with wonderful ministry experiences and the kindness and faithfulness of many sisters, from my early days in novitiate to the present.”
Kathleen’s story is a living testament to faith, service and the enduring power of education.
