How well I remember this film! I was fifteen years of age and I had read the book. I was attending St Mary's Abbey Grammar School in Mill Hill in Londond when our headmistress gave us the exciting news that a film was to be made in the school. Since it was an all girls school there was as much excitement in the electricians, floor crew, best boys and males in general as there was in the presence of Diana Rigg. To her credit she was very kind to a bunch of tongue-tied schoolgirls and made no objection to our sitting in and watching two of the scenes being shot. I'm not sure if my memory serves me correctly but as far as I recall it was our Sister Maureen who sang for Judy Bowker when she was taking her vows. I doubt we learned much during that time, there were way too many distractions. I saw the film once, many years ago but I really must make an effort to watch it again.