TY  - JOUR
T1  - Tripartite growth trajectories of reading and math achievement: Tracking national academic progress at primary, middle, and high school levels
AU  - Lee, Jaekyung
PY  - 2010
DO  - 10.3102/0002831210365009
SP  - 800
EP  - 832
JO  - American Educational Research Journal
VL  - 47
IS  - 4
SN  - 0002-8312
ER  -