3 ms·

Exactly. Attendence checking doesn't take 5 minutes per student per class, yet that's what's being claimed by the math....

• kyteland 17y ago
  If we can measure time spent productively in man-months then I say we can measure time wasted by the same metric.
• olefoo 17y ago
  Actually if taking attendance takes 5 minutes of class time (which it easily can with a class size of 30), then all students are blocked from being taught while the teacher is busy so it does make sense to count that as (n+1) * 5 minutes where n is the number of students. Fingerprint scanners for attendance would both speed up and parallelize this operation.
  • cma 17y ago
    What could possibly go wrong with implementing a complicated biometric fingerprint scanner based system for our schools? http://news.ycombinator.com/item?id=1221068 http://news.ycombinator.com/item?id=1221068
    • olefoo 17y ago
      Well card swipes are obviously unworkable. You could maybe link it to student's mobile phones... But the real solution is to have decent schools with classes small enough that the teacher doesn't have to take roll call because they know everyone.