What was the more specific inspiration for John Patrick Shanley to write "Doubt"?

Beginning in early 2002, the Catholic Church in the United States was embroiled in a high-profile scandal about priests who had had sexual relations with young students and parishioners, some incidents dating as far back as the time in which Shanley's play is set. Hundreds of victims came forward, and the Church, as of 2005, was facing lawsuits and undergoing reorganization, but the shock of the abuse of trust and the Catholic Church's attempts to cover up these crimes have left a scar on the public conscience. Doubt faces the unthinkable aspects of this situation with knowledge and restraint.