My teaching schedule is different from day to day. Using a classic, pre-printed plan book has never worked for me, so I use a basic table in Word to create a custom template each year.
My template includes a 2-page spread that includes a column for each day and a column on the right. I use this space for a To Do list (including the things I know I will need to do each week), but you could use it to split students into small groups, record data, plan meals, or anything else that works for you!