This is a decades-old talking point that simply isn't true and hasn't been for years. Funding levels keep breaking records year after year.
"K-12 per-pupil funding [in 2022-23] totals $15,261 Proposition 98 General Fund—its highest level ever—and $20,855 per pupil when accounting for all funding sources." [0]
"Reflecting the changes to Proposition 98 funding levels noted above, total K-12
per-pupil expenditures from all sources are projected to be $18,837 in 2020-21 and
$18,000 in 2021-22—the highest levels ever (K-12 Education Spending Per Pupil)." [1]
You can see that in 2012-2013 there was a big jump in funding from 2011-2012, going from $47.3B to $58.1B. In 2022-23 we're at $102B.
We're at roughly double funding levels from a decade ago, and the schools still don't have enough money to function properly? If so, this is alarming, and signals something is deeply wrong. We should investigate what is wrong and fix it rather than throwing ever more money into the black hole and hoping that will improve outcomes, despite a decade of evidence to the contrary.
California spends about twice as much per student today (inflation adjusted) as it did before Prop 13 passed, so it doesn't track that Prop 13, or underfunding, is the cause of the poor performance.
I meant that primary/secondary funding per student had doubled. The UC and CSU systems have gotten less money from the state, but not because of Prop 13 which limited property tax rates. UC/CSU weren't and aren't receiving property tax revenue.
Most of the decline is due to underfunding due to prop 13