Thanks for your reply. I to was a headteacher! I am looking for my mother Connie (full and only forename) Morling, born 1911, and her younger siblings Mona and George. They lived at 3 Atholl Sreet, Douglas. my mother spoke of being taught by nuns ...so possibly this was at the convent school and not St Mary's. there is quite a big age gap between Connie and Mona. (Am writing in library and don't have those records to hand.)
Barbara Surridge