ACT - The Association of Christian Teachers
for Christians working in education
Pupils secretly taking pictures up teachers' skirts and posting them on social media is becoming more of a problem, a teaching union has warned.
The issue was raised at NASUWT Cymru's conference being held in Wrexham.
The comment follows the introduction of legislation by the UK government making upskirting a criminal offence.
Sion Amlyn, a national executive member of the union, said it was seeing an increase in the number of reports of pupils upskirting.
He told BBC Wales' Cymru Fyw: "Quite disturbingly there's an increase in the practise of upskirting or downblousing by pupils on teachers and that has a detrimental affect on the wellbeing of our members.