Is it easier to hold back talented students with a low bar or push untalented ones to a higher bar?
Most would define a "fair" opportunity as everyone getting the same chances to succeed, but a "fair" outcome would segment on merit. If angling towards fair outcomes, there's usually less uproar over lifting the floor (e.g financial aid), versus lowering the ceiling (e.g. limitations on admissions based on ethnic or financial background).
If the worst school in 2036 California is better than the average school in 2026, then that's an obvious win.
(That goal is completely achievable -- only about a third of California students are grade-level proficient right now.)