Once again I'd really like to thank all of you for your replies. I have read all of them and appreciate the information you have provided. Thanks for all the links also. Oh and I had no idea you could add a transit layer in Google maps!
Just to clarify a detail ... we don't really care how close the high school is to a metro station, rather we were contemplating the idea that it would be "nice" if the house we eventually purchased could be within 1/2 mile of a metro. Of course the other options of commuter buses and driving to a metro station are all worth considering also.
That particular house on a busy street (as well as some of the other houses) is indeed cute ... but I do think the street looks a bit too busy. If the housing market every slumped 20 years from now, it might be harder to sell it.