The Instructional Concepts Program of the Southwest Regional Laboratory (SWRL) is designed to help kindergarten children learn the labels of concepts which are important to success in school. Since vocabulary differences are characteristic of dialect differences, it is possible that some items taught in the Instructional Concepts Program are harder to learn for speakers of Black English than for speakers of other dialects and that these items can be related to known dialect differences. To test for this possibility, the items and subtests from the 1969-70 tryouts exhibiting the greatest number of errors were examined for the schools believed to consist mainly of black children. No such interference was found. (MKM)