It considered this was a "borderline case for serious misconduct" because the actions were not a "brief reaction" but a "sustained use of force".
The tribunal accepted that the use of force was not for bad effect or purpose and did not constitute physical abuse.
However, it noted that the teacher's conduct was likely to adversely affect the wellbeing of the student and also reflected adversely on his fitness to practice.
"In these circumstances, the tribunal did not find the teacher was guilty of serious misconduct, but agreed that the teacher's conduct did amount to a finding of misconduct," it said.