No, no difference - you get the same version. A couple of points to note however: (a) you have to qualify and prove that you qualify for the educational version, see here
http://www.adobe.com/education/purch...,resizable=yes and, (b) educational versions do not qualify for reduced pricing in any future upgrades. What this basically means is that should you qualify for an student/educational version now but in 2-3 years decide to upgrade to say the full version of Photoshop, or even a later version of Elements when perhaps you no longer qualify for the student/educational version, then you will not be able to upgrade at the reduced rate.
I hope that I've made myself clear?