Marjorie Evans, the Welsh headteacher cleared of slapping a pupil, received a standing ovation from the National Union of Teachers' conference when she told delegates of her ordeal.
She said she will seek compensation for the distress caused by her 18-month suspension from St Mary's junior in Caldicot, Monmouthshire.
She spoke after delegates almost unanimously backed a call to protect teachers from malicious allegations by granting the accused anonymity and blocking instant suspension.
She welcomed Education Secretary David Blunkett's announcement of a pound;1.4 million regional network o co-ordinators, to cut the average length of investigations into allegations against teachers from nine months to 12 weeks.
National Association of Schoolmasters Union of Women Teachers' delegates were addressed by a Cardiff head, Tony Tobutt, who had been the victim of unfounded allegations from a pupil. The union called for a national scheme providing compensation.
However, a Department for Education and Employment spokesman dismissed conference calls for teachers to retain their anonymity while suspended, saying it would not be in line with other professions.