The City of London School for Girls (CLSG) is a private school adjacent to the Barbican Centre, part of the Barbican Estate, in the City of London. It is the partner school of the all-boys City of London School and the City of London Freemen's School. All three schools receive funding from the City's Cash. It is a member of the Headmasters' and Headmistresses' Conference (HMC) and the Girls' Schools Association.