TY  - JOUR
T1  - Are middle schools harmful? The role of transition timing, classroom quality and school characteristics
AU  - Holas, I.
AU  - Huston, A.C.
PY  - 2012
DO  - 10.1007/s10964-011-9732-9
SP  - 333
EP  - 345
JO  - Journal of Youth and Adolescence
VL  - 41
IS  - 3
SN  - 0047-2891
ER  -