Peg, we made a mini-vacation out of sailing school, so I think your idea of a school in Florida is a good one.
That said, I assume you're getting ready to pull the boat for the winter by now (if you haven't already). Wait and schedule your sailing school close to when you plan to put her back in the water in the spring. The sooner you're on the boat and putting the lessons into practice, the less you'll have forgotten and the more comfortable you'll be.
I'm sure there are a lot of good sailing schools in Florida. I've heard good things about the Offshore Sailing School though I haven't taken classes with them. Their web site is Sailing Schools | Colgate Offshore Sailing School
and they offer beginners courses.
Best of Luck,