Timaru Girls' High School is a secondary school in Timaru, New Zealand, founded in 1880. Timaru Girls' High provides education for girls aged between 13 – 18 years of age (class levels - years 9 to 13). It also has a boarding facility within the school grounds for pupils not living in Timaru itself and also caters for international students. The school motto is Scientia Potestas Est – Knowledge is Power.