Sutton High School is an independent school for girls aged 3–18 in Sutton, Greater London. It is run by the Girls' Day School Trust (GDST). It was founded in 1884 by the then Girls' Public Day School Trust (GPDST), and was a direct grant grammar school (some pupils having their fees paid by the local authority as in a state grammar school) until this system was abolished in 1976. The first headmistress was Miss Margaret Whyte, and there were 80 pupils on the opening day, 17 January 1884. It has been listed in "Top 100 Independent School"Sunday Times Parent Power Guide, November 2011.