Easy to look at MaxPreps.
Gives the high school and the City. California has a flurry of top high school's from NorCal to SoCal to San Diego. The top h.s. teams are not all crammed in the ie!
Certain kinds of people
for a h.s. team, move or fake an address to try to get their kids to a h.s. they think will be a better opportunity. The same that you're speaking about Norco could be said for multiple other high schools in California. As far as relocating housing is a hell of a lot cheaper in the ie Riverside!
Be realistic. The college coaches know yes there's some top high school programs. They also know those winning averages don't really compair to competitive travel ball. When you're the number one team that slaughters all the other teams that you're facing because the others have crappy pitching and lousy defensive players and teams that can't hit. Come on now take off your daddy goggles its freaken h.s. ball!
Travel ball offers far more exposure than any High School!