sentences:  Castle Hill High School can be noted by their strong participation in extracurricular activities, including sport, musical production, leadership, technology and public competitions.Additionally, the school has a high level of participation and commitment to various charitable events, with a high volunteer rate in activities such as the 40 Hour Famine, Relay For life, The Salvation Army Red Shield Door Knock Appeal and the World's Greatest Shave.Castle Hill High School holds various sporting events including Swimming, Cross-Country and Athletics Carnivals, where students can compete for participation in wider regional competitions, consisting of Zone (representing the school), Regionals (representing Hills Zone) and Combined High Schools (representing Sydney West).