St Dunstan's College is a co-educational independent school in Catford, London, England. It is a member of the Headmasters' and Headmistresses' Conference, and was an all-boys establishment until 1994. Located on an urban site in Lewisham, many additions have been made to the original Victorian building complex, including a large glass-walled dining hall utilising a hyperbolic paraboloid roof requiring no internal supports, the prototype for a similar structure in the city of Calgary in Alberta in Western Canada. Sports facilities include an onsite sports hall complex, swimming pool, netball courts, fives courts and extensive playing fields for such an urban location. The pre-prep and prep schools are in separate buildings on the same site. Most Junior School children transfer into the senior school. The pre-prep school used to be the residence of a previous headmaster.