Surely, any instructor
that values his life, would at least do a brief pre-flight himself,
regardless of whether the student has already done one or not?

Yes. But that doesn't mean that the student needs to be supervised
while he does his own preflight.

Jose
--
Humans are pack animals. Above all things, they have a deep need to
follow something, be it a leader, a creed, or a mob. Whosoever fully
understands this holds the world in his hands.
for Email, make the obvious change in the address.