2 ms·
$0 roll call before each class. That's about a $10 roll call, even if you assume the children's time and education is valueless. (Assumption: you can complete
by patio11 14y ago
$0 roll call before each class.
That's about a $10 roll call, even if you assume the children's time and education is valueless. (Assumption: you can complete it in only 10% of the instructional time per day, teachers have a fully loaded cost of approximately $100 an hour.) The school would, quite literally, spend thousands of dollars a day on roll calls.
- trhtrsh 14y agoYou think roll call takes 5 minutes? If students have assigned seating, checking attendance takes <30 seconds. When you choose an appropriate data structure, the efficient algorithm (distributed seat finding + visual glance) is simple to implement :-)