A Mexico Woman, Laelia Paredes Flores, 35, stormed into the classroom in Huimanguillo, and set upon Marcella Villalpando Tovar, 32, as students and members of staff stood by and watched.
Footage shows Tovar cowering on the floor as Flores delivers a series of kicks and blows to the face and stomach.
She then jumps on top of Tovar and starts pulling her hair and punching her in the face screaming ‘defend yourself you whore’, until eventually leaving the room.
Student Miriam Gracia Adomo, 16, said: ‘The woman charged in and began shouting and screaming before punching our teacher to the floor.
‘That’s when I ran to get help. But when other teachers came they just stood around watching. It was really terrible, terrible.’
A spokesman for the school said: ‘The woman claimed that our teacher was having an affair with the husband of one of the student’s dads and the mother took exception.
‘We are appalled that this attack happened in our school and that nothing was done to stop it, and we shall be carrying out a full investigation.’
Source: Mirror.co.uk