He may seem "fine" to you, But the temperature is an issue, Your being told this by other's who know their stuff and have had chins for years and years. You may think he's ok, But he could be really hot at the moment but because you "think" he's fine, your not going to do anything about it, nor do you seem to care. You should contact your teacher and let them know your not capable of caring for the chin, if your not going to take the advice and facts from the members who know their stuff.
It's sad because in the end and innocent animal is going to end up being the victim. You should do the right thing and either give the animal the right care, which may seem like more compared to other pets, or contact someone who can care for the animal.