Start with this link Mary:
http://italy.english-schools.org/
There are a fair amount of American, English, and "International" schools in the areas you mentioned. Might want to also Google along those lines as well. Keep in mind that these will be private schools, and tuitions will vary accordingly.
The best educational gift you can give your kids also is a head-start in Italian! However, Italian schools are significantly different in their educational approachesso going the "international" schooling route is likely to be MUCH easier. Even so, your whole family should be working on building as much language skill as you can (if you haven't already).
Good luck!