Maybe you could consider working on keyboarding at home, along the lines of what Mamabear was saying--but for those of us who wouldn't know how to start rebuilding a computer for custom use
there are some programs that try to make it fun. Our DD is using Mavis Beacon at school now and likes it (but that might be because it gets her out of other stuff she likes less); we previously tried Typer Island and it had some bugs but makes games out of it (once you get past the drills, which you could 'help' her with in the interest of getting her to where it's fun). Then maybe the teachers would (eventually) let her do homework, etc. by typing, hopefully followed by better accommodations at school--not ideal, but at least it might help you move things along.
