I've never felt so sad to end a school year. I've also never felt like there was a part of the course that I did as well as possible; however, the months after I flipped were the best ever. I wouldn't change much...except for when I started. I wish I had started in August, which is a sentiment shared by my students in their evaluation videos.
But you shouldn't take my word for it.
There is some data:
I had 14 F's and 4 D's at the semester in January. My grades right now: ZERO F's and 3 D's.
Every student turned in a final essay. At the semester in January, about 25% had nothing (or close to nothing) to hand in.
Every student passed the mastery test. I got a few frantic "Check my test now please!" tweets yesterday, but in the end, they all made it.
Very few said anything negative about the flipped class in their reflections. The ones who did were the "good at school" type kids who knew how to get an A by just doing all the work and showing up. They didn't like the responsibility shifting from me to them because it no longer allowed them to skate by with note taking, memorising, and reiteration of main ideas on the test.
What a great year. By far the best I've ever had in my eight year career. A large part of that is due to these guys: