She gave them all a gentle smile before beginning.  "Good evening, students, families, and faculty.  It is with great joy, and a certain amount of sadness, that I am here to say goodbye to our seventh and returning seventh years.  May I first say that all of you have gone above and beyond what I or any of the staff could have asked of you.  You’ve excelled in your classes in a way I haven’t seen for a decade.  You’ve grown immensely as people.  You’ve become examples and leaders for the future of Hogwarts and the wizarding world as a whole.