Here are the stats from the 12/5 session:
Comics collected: 47
Attendance: 5 full-time + 2 part-time = 6.0
Student efficiency: 7.83
Maximum possible: 54
Lesson efficiency: 0.87
One change in the calculations I've made is with students who showed up late in the session and didn't complete warm-up comics. I weighted them by 0.5 since they didn't have a chance to produce as many comics as a normal student. I think this makes the efficiency numbers more accurate than if I counted them the same as the others.