Why not something reasonable like a Kindle?
Why not just get some some kindles (At $79 a piece at retail, they are at least 10x cheaper than the fruity device) and just load them with PDF copies of the textbooks and maybe some other reference materials. Would be a good start in introducing technology to schools and wouldn't be a huge financial cluster fuck if it all failed, especially if you do a pilot program with a single grade level at one of the more responsible schools. Besides a Kindle would be cheaper than a single textbook if it got lost (most textbooks go for about $150-250).
But what am I thinking, this is LA, the land of spending money you don't have to buy things that no one needs. Although I'm assuming this was because some high-level member of the school district had a pleasant lunch with an Apple sales monkey.