One freeway exit away often means a different school district. So, for example Mira Mesa is just a few minutes away from CV – the reality is it’s night and day difference in terms of schools. You also won’t find many Asian gangs in CV, etc.
Now, whether or not that’s worth a 10%, 20%, 30%, etc price premium is up for debate. But I do believe that’s a big factor and will help keep prices propped up.