Understanding Your Lessons Taught Report
After your instructors teach their lessons, they can log in and go to the Calendar → Attendance page and mark attendance there (or you could do it for them). Studio Helper makes it convenient: no need to even print out paper, unless you want to.
Then, you can run a Lessons Taught Report from the Reports page to see all of the attendance information for any teacher or student for any date range, and see how many lessons they’ve attended during a certain period of time. You can print this report if you want as well (including for future months if you wanted to manually mark attendance).