Doubt (2009)

It is 1964, St Nicholas in the Bronx. Vibrant, charismatic priest Father Flynn is trying to upend the school's strict customs, which have long been fiercely guarded by Sister Aloysius Beauvier, the iron-gloved Principal who believes in the power of fear and discipline. But when Sister James, shares with Sister Aloysius her guilt-inducing suspicion that Father Flynn is paying too much personal attention to the school's first black student, Donald Miller, Sister Aloysius is galvanized to begin a crusade to both unearth the truth and expunge Father Flynn from the school.

Official website: http://www.doubtmovie.com.au