Barty Jr's motivation.....

[Ceridwen]

No: HPFGUIDX 155946

sugaranddixie
> ...in teaching Harry's class about the unforgivable curses?  
*(snip)*
Any thoughts?

Ceridwen:
I think Barty Jr. was out to get something of his own, payback.  In 
this particular class, we have a student whose parents were driven 
insane by the Cruciatus curse, a student whose parents were killed by 
the Avada Kedavra...

And, maybe, a student whose father was in some way affected by the 
Imperius curse?

Ceridwen.