A headteacher who had pictures of her schoolgirl lover on her phone has been banned from the classroom for more than three years.
A disciplinary hearing of the Education Workforce Council in Cardiff heard married Rhian Desouza, 44, was in a "sexual relationship" with the 16-year-old girl who sent her photos on social media app Snapchat.
The pair met through a friend and Desouza started helping the girl with exams.
But their relationship came to light after the girl's mother became suspicious - and found secret text messages on her phone.
The girl's mother then reported the matter to police and Desouza was arrested.
Desouza pleaded guilty at Swansea Crown Court to making two illegal sexual images of the girl and was given a two year community order.
Today a disciplinary hearing approved a Voluntary Prohibition Order - meaning she cannot work as a teacher for at least another three years and six months.
Stephen Powell, who chaired the Education Workforce Council hearing, said DeSouza was a head teacher Gellionnen primary school in Clydach, Swansea.
Desouza, of Llanelli, Carmarthenshire had been head of the school for more than five years.
But she is now banned from teaching for at least three years and six months and must reapply for registration because of her conviction.
Mr Powell said the three-year ban was "both proportionate and appropriate."
He said: "DeSouza's actions amounted to a serious departure from the standards expected of her.
"DeSouza was very experienced and ought to have known what was appropriate.
"The conduct found proved is fundamentally incompatible with DeSouza continuing to be a registered person."
Mother-of-two DeSouza was not present at the hearing in Cardiff.