There are so many techniques and concepts that can be taught in the scope of a year. Method books are are great at keeping classrooms moving in a linear fashion, with an unintentional but common flaw: When the ensemble literature performed has notes, rhythms, and many other concepts that are not in the book but still teachable.
Create technique or concept sheets that save precious classroom time. Look at the literature, and create lesson-exercises based on filling in the gaps not covered in our method books.