%0 Journal Article %T Architectures for Learning: A Comparative Analysis of Two Urban School Districts %A Stein, Mary Kay %A Coburn, Cynthia E. %A , %J American Journal of Education %V 114 %N 4 %P 583-626 %@ 0195-6744 %D 2008-08-01 %I University of Chicago Press %~ DeepDyve