A tribunal has heard how a headteacher reduced children as young as four to tears then bragged about "breaking" them. The General Teaching Council for Wales heard how Eiros Hall mocked, humiliated and violently manhandled pupils at a nursery school in an alleged reign of terror lasting years.
Mrs Hall, in her late 50s, was headteacher at Ardwyn Nursery and Infant School, in Welshpool, from 1997.
Mrs Hall is accused of unacceptable professional conduct towards pupils at the school. She denies 14 allegations ranging from shouting at pupils to mocking a child whose father who had died.
A shocked whistleblower said she felt powerless to hold her to account when she witnessed her abuse of pupils. Elen Peate said she was shocked by her behaviour but unable to act as Mrs Hall doubled as the school child protection officer.
No longer at the school, details of the allegations against her were only passed to the authorities when a new deputy head began.
A GTCW professional panel, sitting in Cardiff, will hear from four whistleblowers who were all teachers at the school. It will also hear evidence from eight teachers whose testimony supports Mrs Hall's denial of the allegations.