I'll agree with Dan Weintraub of the major Sacramento newspaper that this article, published, in all places, in the LA Times, gives a pretty clear picture of what Rob Reiner's initiative will require in California. And it's not pretty.
Here's an interesting paragraph:
We don't need this. Preschool is already more "universal" in California than you might think. Somewhere within that patchwork are an estimated 70% of all the 4-year-olds in the state — about 63% in preschool centers, and a handful in family child care. The universal-preschool crowd hopes to raise that to 80%. So to get an additional 10% enrolled, taxes would pick up the bill for the other 70% as well. California's nonuniversal system already covers a bigger percentage of its 4-year-old population than Georgia's universal pre-kindergarten system, now in its 12th year.
And since I'm no fan of Rob Reiner (I usually agreed with Archie when they argued--Reiner *is* a Meathead), I'll link here to this article called, appropriately enough, Fisking Meathead.