Katanning Senior High School is a comprehensive public co-educational high day school, located in Katanning, a regional centre 280 kilometres (174 mi) south east of Perth, Western Australia.

Nicki Polding was the principal of the school from 2011 to 2017.

[citation needed] Katanning Residential College was located adjacent to the school and offered boarding facilities to many High School students from remote areas.

The College was formerly known as St Andrew's Hostel.

^* The Government of Western Australia manages the Indian Ocean Territories under the Territories Law Reform Act 1992