Needham & Company analyst Charlie Wolf noted in a letter to investors that while PCs in the educational market continue to outsell iPads, the remarkable growth of the iPad in the most recent quarters shows definitively that it is cannibalizing PC sales in the sector, a trend that will likely continue further narrow the gap. PC shipments fell nearly 14 percent or 265,000 units compared to the June quarter of a year ago, while Mac sales in education held steady and iPad sales doubled.