The names I remember are from back to front left to right.
Janitor - Gerry Steele, One of the office ladies (Mrs Shaw or Mrs Scott?), Mrs McIlraith, Mrs Baird, Mrs Livingstone, Miss Letham, Miss Morrell, Mr Boyle, Mrs Driver, Murial (Music Teacher),
Miss Kemp, Not Known, Mrs Shepherd (Assitant Head), Mr Lennox (Head Teacher), Mrs May (Infant Mistress) Sheena Martin, Not Known.

Some other teachers' names remembered by former pupil, Gary Painter

Miss Keir
Mrs Borland
Miss Stewart