%0 Journal Article %T Tripartite growth trajectories of reading and math achievement: Tracking national academic progress at primary, middle, and high school levels %A Lee, Jaekyung %D 2010 %R 10.3102/0002831210365009 %P 800-832 %J American Educational Research Journal %V 47 %I 4 %2 ISSN: 0002-8312