Nduru Boys High School was founded in 1968 as a harambee secondary school in Gucha South, Kisii County. It started as a single stream school running up to Form 4 but later expanded up to Form 6 offering Arts and Agriculture in 1978 before they were phased out.
In 2006 during the reign of senior principal Samuel Oyondi, a third stream was registered and 12 years later, it became a five stream school, namely East, West, North , South and Meridian. The school has 10 dormitories namely Everest, Manga, Ruwenzori, Otenyo, Alpine, Mt. Kenya, Longonot, Olive, Nzaria, Sakawa.