I initially created these calendars for my classic size (7x9) planner but for this product I've also included the large 8.5 x 11 size as well.
Each page is editable - just add text boxes to insert the birthdays (or any other special dates) that you want!
There are 6 different designs (in 2 sizes). Each has 2 pages (January-June, July-December) that can be glued back to back and punched to fit on the planner rings. There's even a teacher themed one that would be great for your student birthdays and could be displayed in the classroom without taking up much space!
Here are some other planner products available in my store:
Teacher Planner/Happy Planner Birthday Calendar - Uneditable
Disc Bound Planner Products BUNDLE – 6 products total!
Freebie - Contacts Pages for Disc Bound Planners
Birthday Calendar for Disc Bound Planners
Note Taking Sheets for Disc Bound Planners
Gradebook for Disc Bound Planners
Lesson Plan Sheets for Disc Bound Planners
Parent Contact Logs for Disc Bound Planners