So again, who are you suggesting they take action against?

If the school is not part of a parent franchise and is a privately owned school that gained Cambridge accreditation, who else but the owners of the school and the management thereof would you hold responsible in order to take action against?

If there are criminal charges then that would relate directly to the individuals who had committed a crime, so it would be the local teachers and/or management team. I suspect the op meant to say civil charges in which case there would be responsibility on the part of the parent company unless proof was obtained showing they were complicit to any criminal activity.

You are correct that more details from the op would be useful.