St Mary's College is an independent Roman Catholic coeducational day school in Crosby, Merseyside, about 7 miles (11 km) north of Liverpool. It comprises an early years department "Bright Sparks", preparatory school known as "The Mount" and secondary school with a 6th Form. It was formerly a direct grant grammar school for boys, founded and controlled by the Christian Brothers order. Notable alumni include John Birt, Roger McGough, Tony Booth and Cardinal Vincent Nichols.

Crosby is a coastal town in the Metropolitan Borough of Sefton, Merseyside, England. Historically in Lancashire, it is north of Bootle, south of Southport and Formby, and west of Netherton. It abuts the areas of Blundellsands to the north and Waterloo to the south. It is approximately 6 miles (9.6 km) north of Liverpool City Centre.