Stacey, I might follow up a little bit. Something like "wanted to make sure it's straightened out, nothing was written up?" Let the teacher know you haven't forgotten.
We had something like that happen, I let it go and shouldn't have. Alicia took summer courses at the private prep school here before 5th grade. It was a two hour a day for six weeks, musical theatre class that culminated in a show. Alicia was a dancer, and had a solo bit in one of the songs. After the session was over, the teachers would send home evaluations. Well, this teachers' evaluation was HORRIBLE. She said our daughter was disruptive, surly, and wouldn't take direction. I was shocked, and wondered why she didn't call me during the time the class was going on! I spoke to Alicia about it, and she was mystified. She said there was another girl, also in the dance number, that acted like that, but it wasn't her! The teacher doesn't usually teach at the school, so I just let it go. But I think Alicia was telling me the truth, because when we have seen this lady since, she greeted Alicia warmly and gave her a hug. Didn't seem to know her name, though. However, when Alicia applied to the prep school during 5th grade, she didn't even get on the waiting list. I think they looked at those evaluations.
Sorry, long story. Short version, make sure that erroneous reports don't go in your kids' records!