I assume you are asking about student discounts on Disney tickets? If so, there isn't such a thing other than purchasing Youth Education Series (Y.E.S) tickets. They allow you to save some, but look into to program before if you decide they are for your family. http://www.disboards.com/showthread.php?t=2861293
We've used Y.E.S. tickets before, but we already purchased regular tickets for our 2015 trip. With the price increases, the Y.E.S. program isn't as big of a savings at it was in 2012 when we last went to Disney. We are estimating that with the 2015 pricing of Y.E.S. tickets compared to 2014 pricing of regular tickets, there will be somewhere around a $250 difference for our family. Now, $250 is nothing to sneeze at, but we had the cash available to purchase now and we felt that $250 wasn't necessarily worth working around the Y.E.S. schedule for our family.
That isn't to say that Y.E.S. isn't a great program. Our kids really enjoyed the class.