This teaching license allows you to teach up to 10 students in a for profit class, or an unlimited number of students for a non-profit class.
The license fee doesn't include the pattern. You'll need to order it so you can print it out for your students. If you already have the pattern in your collection, you don't need to order it again--just submit the license fee.
One class per license. The class can be split over multiple days without needing another license.