> without increasing educator workload substantially
Isn't this a good thing, employing more educators, building more schools?
Any sane society will always invest more into its future well being and incentivize investments into education.
Not sure what country you live in, but I don't think that the US falls under your definition of a "sane society"
That used to be the case, but it no longer is. Not only are budgets limited, only a few choose for a career in education, leaving schools already understaffed. Expansion is not feasible in the short run.