3. most teacher-new and veteran-experience frustration with the ever-changing all-school schedule, school assemblies, and other interrupters to their day. The first thing to remember is this; the only thing for sure in your day is that nothing is for sure; once you can accept that fact, you can begin to bring some order to your schedule. One helpful way to begin to organize is to open your weekly lesson plan book, and enter everything you know is already schedule for the week in question. Include your own and your students’ lunch hours, your preparation hour, and any duty hours for which you are responsible. You should also incorporate any school assemblies or other upcoming activities that will impact your instructional planning.