alchemy / Alla's question / Hogwarts class

[Catlady (Rita Prince Winston)]

No: HPFGUIDX 185965

--- In HPforGrownups at yahoogroups.com, "Geoff Bannister"
<gbannister10 at ...> wrote:
>
> Speaking from my experience, permit me to disagree 
> with you. In UK school terminology, a double lesson 
> is two periods running concurrently. 

Yes, but not everything in the Potterverse is the same as in the UK.

> I previously postulated that, because Snape seems 
> to have been the only Potions teacher, the two house 
> combination may have forced onto the timetable. 

Snape is the only Potions teacher, Flitwick is the only Charms
teacher, McGonagall is the only Transfiguration teacher, Sprout is the
only Herbology teacher, Sinistra is the only Astronomy teacher,
there's only one DADA teacher each year...

Until NEWT preparation, Harry's Gryffindors have Double Potions with
the Slytherins, Double Herbology with the Hufflepuffs, Charms alone,
DADA alone,Transfiguration alone, and we don't know about Astronomy.
I'd like for them to have Astronomy with the Ravenclaws for the sake
of students getting to know each other. I haven't found any example of
a one-House class being called Double whatever.

It could be that Hogwarts has a custom, possibly because of having
only one teacher per subject, that double-length classes have to be
two Houses.

By the way, how long is the 'passing period' between class periods,
and is one of the eight 40 minute periods the lunch period?