Factual error: At the very end of the movie, the Pope gives the nuns a standing ovation. The other people seated in the box with him should have immediately risen at this time. Instead, the man seated to his left looks up at him, seeing that the pontiff has stood, but makes no movement to join him on his feet.
Continuity mistake: When Whoopi first takes over the choir, she asks the sisters to stand according to their singing voices. She asks where the sopranos are, and several women on opposite corners of the grouping raise their hands. She asks them to all move over to the left group, but only one of the two women on the right side actually does so.
Question: When the nuns perform for the pope at the end of the film, the pope is seated in the balcony. I was wondering if this would actually happen in real life. Wouldn't the pope be down at the front of the church to celebrate the Mass? I suppose he could have gone up to the balcony just for the singing but that doesn't make much sense.