Teachers using Timeturners?

[Carolyn <summer2999@aol.com>]

No: HPFGUIDX 51582

Recently I read a post about a master schedule for classes, and it 
seemed really hard to me for teachers, especially ones like 
Professor Snape, so teach so many classes.  There are seven years 
after all, that take the same class.  So I was thinking, how do they 
do it?  And then I thought... a time turner?

If Hermione could use a time turner to attend lots of classes, why 
can't a teacher use a timeturner to teach lots of classes?  There 
could be say two class rooms, with for instance the first years 
being taught in one and the second years in another.  The only 
problem with this is that if a student was walking down the hall to 
go to the bathroom, they might be very confused to see a teacher 
teaching two classes at once.  It would also be confusing if two 
students were comparing their schedules, and they realized they had 
Potions at the same time.  Maybe, if the teachers actually used time 
turners, they would have like first years and seventh years having 
class at the same time, in the hopes that they wouldn't compare 
schedules with each other.

Well I'd like feedback on this... this is just an idea, I won't be 
surprised to find out that it's impossible.  One more question--why 
don't we ever see Astronomy Class?  Why???  Or any evidence that 
anyone takes it?  Is it just not integral to the plot, or what?

Alright, I'm done.  Thanks for listening.

Peace,
Carolyn