Too scary for preschool

Okay so all of you that know me, know that I am the biggest animal lover that there is...the problem is that I have a problem with the newest pet at Kaitlyn's preschool. It is a tarantula...now yes I hate spiders but that is not my concern. Tarantulas are peaceful by nature, but if a 3 yr old comes up to you and shakes your plastic house, I don't know how peaceful it can be. Tarantulas are venomous, a bite they say is like a bee sting...painful, but the web says rarely results in death.....OKAY...what about any of that makes the teacher think that this is an okay pet to have in a class with twelve 3 yr olds...and if one just happens to drop the cheap plastic container that it is in, the lid will come off and there will be a spider on the loose....lets not even imagine how that is going to end. It also states that the hair of the spider can cause severe irritation to skin...okay so how do I bring this up to the teacher without her getting defensive....I am paying good money to send my kid to this school and let me tell you what, if my kid was to get bit by a spider that she had as a pet..we are going to have a problem.....