My tools this year were my 5D Mark III and EF 24-105mm f/4L zoom. I missed the option of standing back farther in the auditorium and zooming in. It was more difficult getting from one side of the stage to the other as the rows near the front were cluttered with kids, backpacks, etc.
The usual problems of white balance and uneven lighting made for a slow processing of the images. I ended up with 260 images including headshots.
The full gallery can be viewed at http://trulandphoto.zenfolio.com/millie. Here are some samples.