A recent comment by frequent visitor JCD using a racial stereotype in describing a former student leads me to post this analysis of the use of stereotypes in the classroom and their results both socially in the context and particular to the person to whom applied.
Christine Reyna Lazy, Dumb, or Industrious: When Stereotypes Convey Attribution Information in the Classroom Educational Psychology Review, Vol. 12, No. 1, 2000
A larger version may be seen here. http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.573.6067&rep=rep1&type=pdf
There seems to be a lot of this going around.