Some random truths on school funding as we approach a significant economic downturn. Most states never fully recovered to labor cost adjusted pre-recession spending levels:
Most states significantly reduced the share of their economic capacity spent on K12 ( http://schoolfinancedata.org )
Ignore "alternative facts"
And those cuts - and yes they were cuts - harmed student outcomes! https://www.nber.org/papers/w24203.pdf & https://files.eric.ed.gov/fulltext/ED579067.pdf
As always, the interesting story is in the variation across states. For example, % changes are larger where spending is just a lot lower (like AZ or OK) & the high water mark differs across states in level and timing.