St Mary’s School old photos

These photos are all from St Mary’s School. Is anyone with an eye for dating costume able to give any of them an approximate date?

Photo to be added

In the foreground of the last one is a man with his back to the camera.  I believe that is Rev. John Payne, then Rector of St. Mary’s Church.  I also think that the picture is older than 1971, as it looks as if my two sisters were in the photo, Helen and Elizabeth Gill, who attended in the 1960s.  They left for the USA in 1967.  (Email from Angela Saunders)