Pervert in our school?

My name is Joy, and I have a daughter in Waukee Middle School.  As most parents will do, from time to time, I recently listened in on a conversation between my daughter, and some of her friends while they played after school, and I overheard something that disturbed me very much.  One of the girls started talking about Mr. Roth, and how he was trying to talk her into going with him to his vehicle during study hall.  As she spoke, two others confirmed that he had approached them in a similar manner.  I don't know this, Mr. Roth, but I assume that this person is an adult, and that this type of behavior can not be tolerated.  I'm wondering if anyone out there knows this person, and if there is any other evidence that this man has engaged in any inappropriate behavior in the past.  That's why I came to this blog.  I'm searching for anyone who's children can substantiate information from the conversation I overheard.  I did confront my daughter about it, and she confirmed that the other children's accusations were legitimate, and that this teacher could possibly be a predator.  If you have girls in Waukee, ask them about Mr. Roth.  For the sake of our children, this needs to be looked into.  Thank you, Joy M.