This is as much effort as I'm willing to put in, but you were probably right to be sceptical; it seems unlikely to be zero. On the whole, the results revealed high levels of validity for the teacher-judgment measures. The studies revealed, however, some variability across teachers in accuracy levels and suggested the operation of certain other moderator variables. Teachers' ratings of children's academic abilities, classroom skills, and personal-social characteristics were highly predictive of subsequent school achievement. Although teachers tended to be more positive toward girls, within each sex ratings were predictive of future performance. Teacher ratings were more predictive of scholastic success than ratings made by mothers. (MV)