The Mary Erskine School, popularly known as "Mary Erskine's" or "MES", is an all-girls private secondary school in Edinburgh, Scotland. It was founded in 1694 and has a roll of around 750 pupils. It is the sister school of the all-boys Stewart's Melville College (SMC) with which MES shares a coeducational nursery and junior school for pupils aged 3–11. Wikipedia