Collaboration can often be a part of your prep time. Learn how to incorporate collaboration time into your prep time without sacrificing too much. Don't let this aspect of your planning time eat up too much of your already limited time and make sure that when you are having collaboration time it is well worth it.
Find out how careful planning can help you to utilize your prep time effectively. Prioritize and make lists, but maintain your natural, flexible teacher persona because you never know just what will happen on any particular day! Check out this article for more details.
My personal favorite line from this article: "...by the time you've used the restroom, filled your water bottle and decompressed for a second...wait, who are those 30 children walking in the door already?" Too true! Avoid being left to wonder where that time went by enlisting these strategies for your prep time.