M.M.
Of course, IF your child's school actually uses them and requires them AND you can afford it, I suppose it's okay.
I own an iphone and am a mac person and I, as an adult, don't even own an ipad!!
If people are comfortable giving their children $600 toys (what they are to THEM, even if we think they are educational) I suppose live and let live.
My 11 year old son doesn't yet have a mobile and when he and his sister "whine" about getting an ipad, I just say, I don't even have one and they're not getting one. End of story.
Our friends' kids got them from a kind grandma, but the older boy, 12, is on facebook, etc. So don't think that the kids won't be on something that they shouldn't. The WILL be. If not now, then next year, or the next.
Why rush it.
Again, if they NEED it for school, and I mean NEED it for school, then I guess you have to get one.
A kid that young shouldn't be even having this discussion.
Good luck!