You are not permitted to download, save or email this image. Visit image gallery to purchase the image.
The school announced Graham Robinson's death in a post to their Facebook page about 4.30pm.
He died this morning at school, according to the post.
More than 200 comments have already been made, many in support of Robinson's family.
Kuli Kiuli wrote that Robinson's death was "very sad news".
"Well respected teacher that my boys have had the privilege to be in his class. Condolences to the family."