Thank you for the high quality comment. I'll try to add some insight here for race. Using the reports [1] and [2], the difference for Grade 4 students are:
American Indian / Alaska Native - 2.5% in 2019 - 1.6% in 2023 - 515 in 2019 - 504 in 2023
Asian - 5.3% in 2019 - 4.3% in 2023 - 586 in 2019 - 571 in 2023
Black - 13.2% in 2019 - 15.5% in 2023 - 494 in 2019 - 468 in 2023
Hispanic - 25.8% in 2019 - 26.3% in 2023 - 508 in 2019 - 491 in 2023
Native Hawaiian / Other Pacific Islander - 1.7% in 2019 - 0.9% in 2023 - 500 in 2019 - 457 in 2023
Two or more races - 5.6% in 2019 - 8.1% in 2023 - 554 in 2019 - 542 in 2023
White - 45.9% in 2019 - 43.2% in 2023 - 559 in 2019 - 543 in 2023
It looks like all groups suffered at least 10 points in loss but these effects are definitely exaggerated by the reweighing of population proportions.
[1] - https://nces.ed.gov/timss/results19/index.asp#/math/achievem...
[2] - https://nces.ed.gov/timss/results23/index.asp#/math/achievem...
American Indian / Alaska Native - 2.5% in 2019 - 1.6% in 2023 - 515 in 2019 - 504 in 2023
Asian - 5.3% in 2019 - 4.3% in 2023 - 586 in 2019 - 571 in 2023
Black - 13.2% in 2019 - 15.5% in 2023 - 494 in 2019 - 468 in 2023
Hispanic - 25.8% in 2019 - 26.3% in 2023 - 508 in 2019 - 491 in 2023
Native Hawaiian / Other Pacific Islander - 1.7% in 2019 - 0.9% in 2023 - 500 in 2019 - 457 in 2023
Two or more races - 5.6% in 2019 - 8.1% in 2023 - 554 in 2019 - 542 in 2023
White - 45.9% in 2019 - 43.2% in 2023 - 559 in 2019 - 543 in 2023
It looks like all groups suffered at least 10 points in loss but these effects are definitely exaggerated by the reweighing of population proportions.
[1] - https://nces.ed.gov/timss/results19/index.asp#/math/achievem...
[2] - https://nces.ed.gov/timss/results23/index.asp#/math/achievem...