Good move on Apple's part. The iPad 2 was looking rather old as the 'education' model.
CUPERTINO, California—March 18, 2014—Apple® today announced iPad® with Retina® display replaces iPad 2 as the most affordable 9.7-inch iPad at $399 for the 16GB Wi-Fi model and $529 for the Wi-Fi + Cellular model.
I bought a refurbished iPad 4 at Christmas for my daughter, and it's a big improvement on the third-generation model, let alone the pre-retina models. Much happier running the latest apps, and we don't need to keep old dock-connector cables around the house anymore. I'd have no hesitation in recommending the fourth-generation model for schools looking to buy a bunch of iPads and make a saving.