I've looked at life from both sides now...

Our LMC is scheduled both fixed and flexible right now. In my 20+ years of experience, I've had schedules that were all fixed, all flexible and mixed. I still cannot decide what is absolutely, for-sure, the best form of schedule. My answer keeps changing with the ever-changing environment of education, so for now I'm content to just ask the question and try to make some objective observations and keep learning as each school year progresses.