As you know, if you homeschool, it's really, REALLY important to plan ahead. This printable school calendar is a very easy way to plan for the school year, especially since you can easily color code things for readability.
Since I'm late (again) in posting this, I've included only a single 14-month calendar from August 2020 through September 2021.
Using the calendar is quite simple. You can fill in the key at the bottom to indicate different types of days such as field trips, holidays, full days, half days, or whatever you want. There is also an additional column to the right of Saturday in each calendar to use as you wish. If you want to count days present, or weeks of school, or whatever, you can easily do that in this extra column. (Thanks to Lisa for that suggestion!)
Several years ago a reader suggested using highlighters to mark the days. That way the day is colored, but you can still easily see the date. Here's an example of using a highlighter on the calendar.
Download the printable school calendar