A teacher has lost his job after mistakenly broadcasting pornography to his classroom.

In a decision published yesterday, the Teachers' Disciplinary Tribunal censured the unnamed teacher for the few seconds of adult content he broadcast in November 2011, but stopped short of cancelling his registration.

The man himself was so shocked after the clip that he simply continued to teach the year 12 class without mentioning the offending material.

After pupils raised the porn clip with their student counsellor, the teacher immediately confessed and resigned.

The mistake occurred after he viewed the pornography at home on his personal work laptop.

He was streaming a PowerPoint presentation from his laptop on to the school smartboard when it switched over to the next file, which happened to be pornographic.

The man was deeply remorseful for his actions and told the tribunal he had not viewed pornography since.

He has been allowed to continue to practise as a teacher, although not at the affected school, and must disclose the incident to any future employer.

A female gym teacher was not so lucky after being accused of sexually grooming a 12-year-old girl, texting her obsessively and rubbing her thigh.

The tribunal censured the woman, who is not named, for serious misconduct and stripped her registration.

The decision showed she and the pupil exchanged 1500 texts over a month, with the teacher using "obscene and abusive" language.

A relationship between the pair developed after the teacher was asked by her deputy principal to keep an eye on the pupil because of family financial difficulties.

After spending an increasing amount of time together, and exchanging hundred of texts, the teacher invited the pupil home in July 2010, when she touched her thigh.

The pupil and teacher disagree as to the extent of touching, with the teacher describing it as innocent. The pupil, however, was distressed and eventually told her mother, who reported it to police.

A police investigation found the teacher's conduct, particularly the obsessive texting, was evidence of sexual grooming. The teacher denied she was grooming the pupil, and said she was motivated by concern for her wellbeing.

The tribunal found that, while there might have been no sexual intent, there was a clear attempt to build a deeply intimate and inappropriate relationship.

Other decisions published yesterday include:

A male teacher caught with his underpants around his knees next to a 16-year-old female pupil in the back of his car was stripped of registration. When asked by police what he was doing, he responded that they were discussing "family matters".

A childhood care teacher was censured after she was caught on camera repeatedly stealing food from children's lunchboxes.

A man was censured and ordered to attend anger management after he "cuffed" a troublesome pupil over the head during class. After the attack, he was kicked "kick-boxing" style by the pupil's cousin. After the scuffle, both pupils fled.