When I went to Hiroshima I had a few 'deep' conversation with some people at the museum -- but it was all really neutral... The only point they kept making was how terrible atomic-warfare is, not really bashing any particular side.
But the museum was overwhelming bias; it had those dramatic sculptures with the melting flesh, and those ridiculously enlarged photos of burns and open wounds. The atrocities committed by America were made pretty obvious, but not quite the other way around.
I'm curious to see what the teachers on the board think - maybe they've had some experience/witnessed a Japanese history lesson?