Annie--
Some of us posting are writing from a perspective of having experienced college/GLOs/alumni/etc from way outside where they were born. It sounds like you know the California system pretty well. However, how about New England, the Mid-Atlantic East Coast, Mid-West/rural, Mid-West/urban, Texas, and SouthEast? Those are the types of colleges and school systems I've communicated with personally over the past 12 years as a college alum. Let me tell you, they are as different from each other as red is from green. I can guarantee that the Greek system at Boston U (the one I've had the most experience with personally) is extremely different from yours in California.
As far as schools or groups going into high schools to talk about rush: scroll up for my post on the subject. Yes, they do--as part of "Campus Life" in introducing their programs to potential applicants. I know, because I'm one of those people who does it on a regular basis.
No one is really arguing here--it's just that those of us pointing out the differences may have had a few more trips around the sun to see them.
Adrienne (PNAM-2003)