Figures from the NASUWT show that in the past five years, 634 members of the union have been accused of sexual or physical abuse. But only 11 of these were convicted of any offence. Union officials believe teachers accused of wrongdoing should be given anonymity while their cases are investigated. The figures also show that in the last ten years the number of accusations made against teachers has quadrupled. The union says even though the vast majority of teachers are acquitted they face immediate suspension and months of investigation once an allegation has been made