Welcome to the forum. I would suggest that you might want to start with the Search function as this is an often asked question regarding all JAA approved Flight Schools in the US.
Once you have researched then by all means come back and request information on a specific topic. Google may also provide some insight.
In reality, you will only determine of a Flight School is suitable for you - is by making a personal and unannounced visit. With the amount of money you will likely spend - a visit is imperative. Once you have signed up for a US based Flight School - it can be quite problematic to subsequently switch - not to mention the additional costs incurred.
In the meantime, I will close this thread.