One student told the court that she and a friend asked if they could go outside because they had nothing to do and were sitting around talking in Henderson's maths class.
Henderson said no, but they were bored and decided to go outside anyway with a frisbee.
She said he also came out and asked if he could play but they knew he was just going to take the frisbee and did not let him have it. He asked them to go inside.
She complained that Henderson then tried several times to take her glasses off her as he backed her into a wall, and then led her towards the classroom by the arm, or pushing on her back.
She said she would take herself into the classroom. She stayed in Henderson's classes afterwards, and made sure she did what she was told.
She told the hearing that she didn't realise at the time how wrong it was, but, after thinking about it, she thought his actions were "not called for".
In his evidence, Henderson told the tribunal that he had "shepherded" the student into a corner and, using the pretence of trying to swipe her glasses, he had taken the frisbee off her. He had then escorted her to the classroom by the arm but she had moved of her own volition.
The student agreed that she had moved "of her own volition".
The hearing will continue on Tuesday. The names of the students are suppressed.