The PSHE teacher at my school, who is quite tech savy, has been looking into software he can use with iPods and iPads (if possible also Android) in his classroom. He found the free Dartfish EasyTAG app that he has been using for the past two weeks that he feels gives adds greatly to his lessons.
This app allows the students to track what is happening in the games that they are playing in real time. For example if they are playing a game called Speed Ball the people who are not participating in the current game can keep track of the stats for their classmates. You can set up different scoring panels for different types of games. You can keep track of different match-ups as well. Another great aspect of this app is that you can export the results either via email or through iTunes.
For more information on the product you can visit the Dartfish EasyTAG website.
Or you could just download the FREE app and give it a try.