I did not find it useful at all in a lab setting, let alone a classroom. If you go this way be sure to get advise from people actually using it for research - there are some out there.
I gave up on low cost "eeg"; appropriate resolution and precision in a wireless device
I think you are right, I tired searching for some papers that cited it in research work but I have not found any. In their website they mentioned that its designed for everyday use. Perhaps it is not useful for research work.