My little brother (he just turned 40) is a High School art teacher in southern Maine. He is taking his first Sabbatical in the spring semester 2006 to finish his MA (or is it an MEd?), and I believe he's been in his current district for about a decade. So it looks like Maine is on the once every 10 yrs type schedule for Sabbaticals. My Dad was a college professor and was theoretically entitled to one every 7 years (you know, 7 like the sabbath).
I'd be the non-academic man in our family, having strayed into commerce (shocking, isn't it), but at least they get a decent financial planner to help them (me). Have a great sabbatical!