Is flippin a class like flipping a coin.

Picture it....the class is prepared, the desks in place the beakers bubbling...all you need to do is do 10 minutes of theory to prepare them for the lab then you are off to a wonderful learning experience....what could go wrong.... then 5 minutes in you hear it "but i don't understand could you go over it again" from there it goes down hill and you get to the point where you could either rush the lab to get it done or reschedule it for tomorrow and you are looking at 20+ faces with nothing planned...neither are good options.
how could the flipping class model help this... well if we had done the video and they had watched it before they could have watched multiple times to understand before coming to class so we could get right into the lab.
The possibility of this model has great.  The only problem that i could see is that it is reliant on the students preparing before class and if they didn't then they would waste the class because you wouldn't be teaching it in class.  Another possible issue is that you need to have everything prepared well in advance to keep all students with videos / content to work on so the fast can not be held back and the slow has enough time to understand.

I think this model of class has great potential to be effective in my class room of high school science so that i can divert time from lecturing about the topic to hands on use of the theory.