WOW.....I'm glad that your kids (with the exception of the chickens that is
) are okay.
I think what I find most frustrating is the "attitude" that seems to prevale in some training places that "oh its a rottweiler.....it can handle itself" and that is somehow okay for all sizes of other critters to attack it because its a large dog.
This is the reason why my one girl HATES black labs.....I swear she can pick out a black lab from the other side of a show building....and she's developed a hatred due to repeated attacks from so called "family friendly dogs".
Personally I would be looking for both a new place for obedience....where the instructor actually was supervising and monitoring her charges as well as a new place for Agility.....both for the same reason.
Plus is just somewhat seems to me that if there are 25 other dogs in your girls obedience class then there is no way for the instructor to offer individual assist with something that your dog might be slow at picking up or issues you may be having......I think I would look for a new trainer that offered smaller classes with the potential of more one on one assistance.
JMO....glad your dogs are okay!!
Heather Peters