I am one of the first 'round' of BYOD teachers at my school. We have a pilot program of two form-classes (50 students) who stay together for social studies, maths, science and English (and PE, but two periods of PE a week does not lend itself to BYOD). I am one of the eight teachers of these two classes and have had my iPad since Term 2 of last year in order to prepare myself. During 2013 I attended a huge amount of BYOD professional development in Auckland, Tauranga and at Trident itself. While I didn't have an official BYOD classes last year I did use my iPad in class occassionally. It was especially useful for students who needed to watch a video in order to catch up. I was beginning to flip some of my lessons and a student might use my iPad to watch a video if they didn't have a smart-phone or tablet of their own. Over the year I did learn a lot, but ultimately you have to dive in to find out what works for you.
And it wasn't until I had 25 students in front of me with their own iPads that I could really begin to teach using the concept of BYOD. Before I talk about how I use this technology to improve the learning outcomes of my students, I think it is important to put rest to concerns about devices just being used as another fad or a way to engage students. iPads won't engage students any more than Smartboards will, it is still the strategies you use in your teaching that matters. And someone has come up with a lovely acronym to explain just this concept.