Teachers Weekly Instructional Responsibility

How can we organize our schools so that teachers have time to:
1. Plan and prepare inquiry-based, engaging lessons?
2. Collaborate with colleagues about students or subject matter?
3. Provide substantive feedback to students to accelerate their learning?

Teachers in Finland (my work has focused on grades 7-9) are paid a base salary of 21 weekly lesson hours.  Allow me to elaborate... if you teach Finnish or Swedish or science, you are actually paid for 18 lesson hours of instruction and 3 hours to grade essays or prepare experiments.  Isn't that pragmatic?   If you teach more than the 21 lesson hours, you are paid a little extra.  Most of the mathematics and science teachers I have met teach 24 lesson hours a week.

So if you teach 24 lesson hours, that is about 5 hours a day, but actually you might teach 6 hours one day and three hours another.  Thus, there is flexibility in the schedule and work week for each teacher to manage the work -- at school and not in front of kids.  Does that make sense?  Does something need to be clarified?

In Chicago (and probably the U.S.) -- often, planning/preparing lessons is on the teacher's personal time.  Collaboration with colleagues is during common preps (if you have them), but often teachers are given work to do during some of their collaboration time so they often choose their other free weekly prep periods to do their lesson preparation.  With the nonstop instructional day, I believe, most CPS teachers either do quick grading at school OR because they are tired from nonstop day supervising kids, take their grading home.  The disadvantages of this lack of time means either students do not receive substantive feedback to correct their misconceptions, or if they do, it probably is not returned timely and (as research shows) loses the instructional impact.

I have developed and advocated a variety of schedules over the years for schools and my grade level teams because the schedules provide the philosophical framework to enable (or prevent) instructional flexibility and professional collaboration.  How about all of the schools in the district?
 
If the adminstration creates a schedule or if teachers do not advocate for themselves -- this minimal opportunity to prepare lessons and collaborate with colleagues is lost.  How can our teachers have more time (not teaching) built into their school day?