On #3, you're being too black-and-white. It is a mistake of perception which happens regularly throughout the school system.
With a ho-hum teacher, what if these kids would normally get a 50% average, but with you, they're getting a 54% average? Still failing -- but 4% points better than they would have been.
Likewise, in a school which produces above-average grades, if a kid is getting a 95%, maybe a bad teacher (or system) is not serving her well enough, because her ability is actually at 100%. But the teachers of that student would pat themselves on the back.
no subject
On #3, you're being too black-and-white. It is a mistake of perception which happens regularly throughout the school system.
With a ho-hum teacher, what if these kids would normally get a 50% average, but with you, they're getting a 54% average? Still failing -- but 4% points better than they would have been.
Likewise, in a school which produces above-average grades, if a kid is getting a 95%, maybe a bad teacher (or system) is not serving her well enough, because her ability is actually at 100%. But the teachers of that student would pat themselves on the back.