I am from Maine, the deal is actually on hold I believe due to budget constraints, it wasn't canceled, but after the initial round of laptops it got put on hold, (again not quite sure if it has started up again).
So far as I know, everyone involved is pleased, the ibook is perfect for students, and I think the teachers got pbooks, have to check that.
It seems most K-8 grades use Apple and then 9-12 use PC's, thats the way it seems here.
A note, I believe Microsoft did the study that recommended the laptops for students, but Apple products were chosen ;]
A older article spelling out the contract;
http://www.wired.com/news/school/0,1383,49046,00.html
Apple special pricing (?) Page for Maine parents;
http://www.apple.com/education/maineparent/
cyas!