“Air Force researchers were delighted recently to learn that they could cut training time in half by delivering a mild electrical current (two milliamperes of direct current for 30 minutes) to pilot’s brains during training sessions on video simulators.”

http://www.huffingtonpost.com/2011/11/27/transcranial-stimulation-speed-up-learning_n_1115035.html?ref=education&ir=Education

The problem remains, how do get students to voluntarily wire their own brains?  Perhaps an iPad app connected to a hat with an Apple logo on it.