A teenage girl started self-harming and needed counselling after having an intimate relationship with a disgraced teacher.
The teacher was censured and had his registration cancelled. The student was 17 at the time of the relationship.
The Teachers Disciplinary Tribunal suppressed the name of the teacher and the school, partly to protect the girl's identity.
The intimate relationship began on a field trip. The tribunal said when the relationship ended, the teenager "went through a period of self-harming."
The tribunal said the high school teacher admitted he was wrong to start the relationship with the girl.