I have a few problems with this.
1.) The word is highly offensive. It ranks up there with racial and homosexual slurs, in my mind.
2.) You're talking this way in front of young children. Ages 2.5 to 9 years. Some very capable of repeating it. The use of the word will never stop when it's used so freely.
3.) Said instructor also happens to be an education major in college. I hope and pray that her choice of language improves before she graduates.
5.) Even if you "didn't mean it that way" it hurts. It's like a knife going right in me.
As my daughter (as well as my son) grows up, I do not want them to be exposed to such hurtful and offensive language. I decided against saying anything during the class, but I do plan on addressing it. Not only should that particular teacher learn, but the entire staff should learn (or be reminded) that offensive language such as the r-word will not be tolerated. Thankfully, at this age, Kennedy doesn't know the difference and went on having fun. But someday she will.