WP series: Mathematics Stagnation Nation series for the USA (Part 3) The collective Math stagnations of the grades 4th and 8th in the big cities (or the School Districts based on TUDA of NAEP) of the USA over the 1 decade: their confirmations, time l

In this short paper whose charts were directly borrowed from the NAEP website on the National Report Cards, I noticed some very striking feature s about the national and state math stagnations in the USA, especially for 2005 -2015 during which most of the citywide math stagnations seemed to have taken place . We examined the NAEP math data from 2003 to 2015 for the math grades 4 and 8 from 2