Ben:
The explanations of slope (and course rating) and all the confusion for most golfers with and behind both by Tom Huckaby and Doug Siebert in the first few posts of this thread are really excellent---and comprehensive. Basically what they told you is just about all one needs to know.
But, then, why is it that slope rating is still so misunderstood by so many golfers? That's a good question. If the "bogie rating" was also listed on scorecards (along with the always listed "course rating" (the degree of difficulty only for the scratch player) would it make a difference in understanding?
It might but I think only to a degree. Why isn't the "bogie rating" listed as well on more score cards? Good question and my feeling is it's generally just a matter of lack of available space on scorecards or the feeling that there's little available space. My personal feeling about the reason of such misunderstanding behind some slope ratings on some golf courses is simply because American's just tend to admire and respect more a higher number---even if they don't even understand what it means or what it's supposed to indicate!
It is possible, however, to satisfy some of these clubs who constantly complain their slope is too low thinking a low slope rating is in some way indicative that their course is too easy and therefore does not get the respect they'd like to see it have?
I think it definitely is possible to convince clubs who feel that way that they shouldn't. And this is precisely what we (GAP) apparently have done with one of our courses that complained about their slope rating for years and particularly recently when their course was rerated and their slope actually went down. That would be Aronimink.
We apparently convinced them, as Tom Huckaby mentioned on the second post of this thread, that a really high "course rating" against the actual par of the course that Aronimink does have and a rather low slope (that they do have) is actually indicative of what might be considered the "IDEAL" golf course---eg it really challenges the very good or scratch player without beating the brains out of the handicap or "bogie" golfer the way some of the massively high slope courses like Merion and PVGC do!