I am from lonestar state and the document I got says the new CC for Algebra I includes 30 of previous Algebra I, 1 of grade 8, 1 of Geometry, 6 of Algebra II, 2 of preCal, 6 brand new TEKS and 35% new content to grade level. Geometry has 24% new contents and Algebra II has 13% new contents.
My DD is 10, 6th grade and doing Algebra I and she will be doing dual enrollment in HS. I am not in a rush for her to go to college and compacting more from here on out won't be as beneficial. And AP/honor classes (at least in her would be HS) have tons of homework. If she desires, she may do online classes like Coursera, too.
IMO, keeping kids in holding pattern during elementary years will stunt their growth. When they get older (in MS and HS), they could pursue other interests. HS in some sense is like elementary; they give a lot of homework to make sure the kids get it but sort of repetitive to PG kids.
