Is it true if your dog passes Therapy training or service dog training they won't be affected by BSL?

Liesje

The laws vary state to state, but generally *only* service dogs are protected and *only* in "public" areas (not schools, housing complexes, etc).  So my gut reaction would be no, because first of all taking a therapy dog class is no different than taking any other obedience class, it's just a class.  A therapy dog is different than a Service Dog (a Service Dog does tasks for people with disabilities who need that dog to perform that task in order to have a normal life).  Even non-public areas like schools and housing complexes can prohibit service dogs.  Some have their own rules that do not permit pets but allow therapy dogs and/or service dogs.

There is also no legit "registration" or certifying organization for Service Dogs.  Some advertise as such but these are scams.  Basically anyone can send in papers and money and get a "service dog" registration, but this does not make a dog a true Service Dog.  It needs to perform specific tasks that assist a disabled owner, which generally takes years of training.

Schools may limit service dogs in the classroom, as they are not actually "public venue" locations. A student may be allowed to have a service dog to mitigate their disability, but if one is not a student they are not permitted.

 Housing complexes, condominiums, housing associations and apartment complexes however, cannot refuse a disabled person who uses a service dog, including "no pets" housing, or they will be in violation of the ADA. The only exception to this is if the housing complex is 4 units or less and the owner lives on-site. Otherwise, service dogs are permitted and refusal is a violation of the disabled persons civil rights as well as a criminally prosecutable action that the Department Of Justice may take under the ADA.