Did my daughter break the law?

My 14 year old daughter's first igment this year was a 9/11 project and they let the kids do anything they wanted, poem, picture, sculpture etc. She made a beautiful power point slide show of different 9/11 images and set it to Lee Greenwood's God Bless the USA. She presented it to her cl today (about 25 kids) and they applauded and her teacher gave her an "A". I was proudly telling a co-worker about it and they said that she could get in trouble for publicly using that song without permission. Can she? It seems like it wouldn't be any different than someone playing it on a CD player or something.