Snape's Dementor lesson was: a dumb question

[kempermentor]

No: HPFGUIDX 182577

> Jayne:
> I thought we only found that out in Snape's memories in DH. I don't
> remember it being said anywhere else.

> Carol responded:
> The only place in which it's explicitly stated that Lily's Patronus is
> a doe is Harry's remark to Voldemort during his Snape vindication
> speech near the end of the Battle of Hogwarts, "Snape's Patronus was a
> doe, the same as my mother's, because he loved her for nearly all of
> his life, from the time when they were children" (DH Am. ed. 740).

Kemper now:
I agree with Carol's post.
I wonder:
Did Snape not want to perform a patronus in front of his class
(especially Harry)?
or
Did Snape truly have a better way of dealing with Dementors?

During the Battle of Hogwart's we only see Patroni being cast against
Dementors.  Unfortunately, this could be because those performing the
Patroni who were also Snape's DADA students (Seamus, Ernie, for sure
and Luna most likely) no longer trusted Snape's instruction having
killed Dumbledore.

I don't have my book in front of me (someone's borrowing it), but does
Hermione use a Patronus in the Battle?  If so, that may suggest that
Snape's lesson was not as effective as the Patronus.  I see Hermione's
character utilizing a skill/spell if she finds it effective regardless
of whom taught it to her. 

Kemper, who would've enjoyed reading about that lesson