A new teacher here was in Amman for three years. He said that while he liked the country, it was very difficult for a single, but that it's a great place for families.
A friend of mine sends her children there and she was not very happy with it last I spoke to her (about 1 year ago). She said they kept changing the curriculum and that there was frequent turnover in the international teaching staff. The reviews on this site were uniformly bad as I recall. I am looking to teach specifically in Amman, but this school would not be tops on my list (and wouldn't make the list if I had other locations from which to choose).