Mitchell High School (abbreviated as MHS), established in 1964, is a coeducational government high school located in the suburb of Blacktown, in western Sydney.

[3] On 3 June 1962, a new school was proposed in the Blacktown South region due to the rising population demands in Western Sydney.

The school hall was then opened on 23 December 1975, and then the current dedicated administration office was opened on 5 August 1993, moving out of the current location of the school library.

[4] Due to the relocation of the administration office in 1993, the lower floor of the original D block was completely changed.

A photograph of the covered marble crest currently hangs in the waiting room at the school administration office.