This is a very comprehensive, but uncluttered calendar. There are plenty of nice calendars out there to purchase, but this is so much more flexible and personalized, not to mention cheaper! Counting Coconuts: Our Classroom Calendar & Circle Time
Get Ready for School with Freebielicious and Educents
Teacher Planning Binder - Printable pages to help organize classroom. Different links for printable activities, sub note forms, parent communication, etc. Mainly designed for elementary classrooms but could use as a model for secondary.