David, I did Blue Water Sailing School out of Ft. Lauderdale about 6 years ago with my (then) 15 year old son. It was a live-aboard school, with trip from Ft. Laud to somewhere in the Keys, then back. Boats were older, but you know what, it taught me how to live on a boat I could afford, warts and all. A bit rough around the edges, but worth the experience, including getting hollered at by the Miami marine police for anchoring in some cove that was supposedly restricted. As I said, kind of a real-world experience.
On the other hand, I did the Colgate school with my wife on Captiva 3 years ago, for precisely the same reason you're thinking - giving my wife the confidence to sail without my bluster. We stayed in a condo on the beach, and sailed during the day, after some morning classroom work. It worked. She loved it - and it substantially lessened the fear of heeling and sailing in general, as well as the intimidation of big boat sailing.