NOTRE DAME, Ind. — As the seconds ticked away, the timekeeper cast her eyes across a student lounge on the Notre Dame campus here and announced it was time for the speed daters to change partners. So April Adalim, 24, got up and moved to a tall chair at a round table across from her newest suitor: a graying, bespectacled woman in a religious habit, Sister Theresa Sullivan of the Daughters of Charity.
In this version of courtship, Ms. Adalim was seeking not an affair of the heart but of the soul. After two years of volunteer teaching in a parochial school in Tulsa, Okla.