| Mount Barker High School | |
| Motto Translation: | Not For Ourselves Alone |
| Established: | 1908 |
| Type: | Public |
| Principal: | Warren Symonds |
| City: | Mount Barker |
| State: | South Australia |
| Country: | Australia |
| Enrolment: | 725 |
| Classes: | 8–12 |
| Colours: | Navy blue, white, mid grey |
| Homepage: | http://www.mtbhs.sa.edu.au/ |
Mount Barker High School is a public high school located in the Adelaide Hills, 34 kilometres east of Adelaide, South Australia. It was founded in 1908, celebrating its centenary in 2008.
In partnership with St Peter's College, Mount Barker High School is piloting Dr Martin Seligman's positive psychology theories in education.The positive psychology framework is based around the PERMA frameworkwhich requires only saying things in the Positive, rather than the negative. Using methods including peer mentoring and open opportunities to work on 'open mindsets'.[1] [2]