The question of why technology has not made more of an educational difference has been addressed many times on this site. One position has been that there is still not enough equipment available to encourage classroom teachers to commit to using technology on a regular basis. When companies selling product take this position, the argument is perceived as self-serving.
Apple has a 1 to 1 initiative (like other hardware companies). The website link provided here includes a streamed panel discussion of the benefits of 1 to 1 computing. So, if you are unfamiliar with some of the arguments, here is a reasonable source.
