Common Core has destroyed the math education of an entire generation in my state, as the traditional progression of high school math that has served the US for 100 years (algebra, geometry, trigonometry, calculus) was discarded in favor of a grneric math 1, math 2, math 3, math 4 sequence, each with a random hodgepodge of unrelated topics and no textbooks that were available when the change was implemented.
My state eventually pulled out of Common Core, but only by an act of the state legislature over the objections of the educator class. The damage was already done and it will be years of fighting at the local level and another round of transition chaos before teachers are allowed to teach the standard math sequence again.
Fortunately my own youngest child missed the chaos by one year, but I know many younger kids of friends who are now unprepared to pursue science or engineering.
(algebra, geometry, trigonometry, calculus) was discarded in favor of a grneric math 1, math 2, math 3, math 4 sequence, each with a random hodgepodge of unrelated topics
My youngest was ruined by the "look-see-guess" type of reading in grade school. He ended up hating to read. I used to sit with him and go through the fishing magazines (the only thing he was interested in) which prevented him from being illiterate. However, it kept him from any further interest in reading, to his detriment.