What are the best places, areas, cities, rich people live in California?

Now for this question I want lots and lots of answers of cities like Beverly Hills and more and whats the best and most expansive city to live in? I'm talking cities Bel Air and more. Wheres a good city/zone where there are great private high schools and where can u actually build a huge modern home and more? Whats the best and Most expansive city to live in California with great private schools and no gangsters? I wan't some answers like from low to top from 5 to 1 something like that and if you have more cities give it a shot? I will best answer for any one who has the best results in good areas of California? and Also where do most celebirties live in California?