This is the skull found on the edge of the forest in our school. Can you tell me what kind of animal's skull this is?

This skull is poorly preserved. According to the teeth, it should be the skull of a pig (more likely) or that of a cow, sheep or horse. If it is pig's, the front canine teeth should be removed. If you look again, this skull is half. It is likely that a butcher nearby killed the pig, picked it off and threw half of it into your school.