Buy the Class Rules! 11.75" x 15.75" First & Last Day of School Dry Erase Board by B2C™ at Michaels. Get ready for the new school year by decorating your classroom with school themed décor and supplies. This dry erase board is designed for you to write details of your first day at school and last day of school so you can compare and reflect on the year as you move up to the next grade.