A design and technology teacher was sacked after taking two teenage pupils sledging within school grounds after a snowfall.
Richard Tremelling had not bargained for the fuss he would cause when he set out for what proved to be 10 minutes of impromptu sledging.
After it snowed overnight in February 2009 he took what he regarded as a "classic design" sledge into school to show pupils.
When two boys on the GCSE course asked to try it out at the end of the lesson he took them sledging on the snow-covered grounds of Cefn Hengoed Community School, Swansea.
While the sledging itself was uneventful, the outcome for the teacher was suspension pending an inquiry.
Mr Tremelling was accused of failing to consult the head teacher, or writing to the school governors, before setting off. And while he maintained he risk-assessed the activity before it began, he was told he should have done it in writing.
Within 11 months he was dismissed from duty for allegedly failing to follow the school's health and safety policy.
In all he is accused of nine separate breaches, amounting to an alleged failure in his duty of care to pupils.
Appearing before a General Teaching Council professional conduct committee in Cardiff, he insisted the brief sledging episode was simply a logical extension of a lesson.
Mr Tremelling insisted that his own risk assessment was sufficient and that a written assessment was unnecessary.