The hearing was read a statement by pupil B, a friend of pupil A, who said Mr Towers had left his hand on the girl’s bottom for a few seconds.
The next day Mr Towers apologised to the girl and her mother, who also gave evidence at the hearing, but the girl insisted the matter was reported to the police.
The hearing was told that in September 2005 Mr Towers was acquitted of the two sex charges after the prosecution offered no evidence and he agreed to be bound over for £250 for a year.
The hearing heard he was later sacked by the school, with even the National Union of Teachers describing his behaviour as “highly inappropriate”.
The GTC hearing has to decide if his conduct fell below that of a registered teacher.
Mr Towers did not dispute a claim of humiliating the girl, abusing his authority as a teacher or undermining trust in teachers through his actions, but he denied that amounted to unacceptable professional misconduct.
The school has since closed.