A three-time Paralympian and former school principal in Western Australia has been banned from teaching for two years after he was convicted of growing cannabis and stealing.

Dennis Bernard Kennedy, who uses a wheelchair, became the principal at Menzies Community School in 2016.

But on Friday, the State Administrative Tribunal found the 69-year-old was no longer fit to teach because he had been involved in two separate crimes.

Police found 30 cannabis plants on Kennedy’s back porch and 20.9 grams of dried cannabis inside his home in 2017.

Kennedy said he was “just curious and wanted to see how they would grow”.