I had started to put together a list of challenges from our family experiences plus things I had read on the forums over the past few years and wanted to share it with the group. You may find this helpful in talking with teachers and health professionals and may want to add more things that are specific to your son.
Challenges that can be associated with 47,XXY
Available as an MS Excel File (This is preferable, because you can add your notes or comments to it easily)
Also available as a PDF