The relationship between the frequency of African-American English (AAE) features used by African-American adolescent males (n = 16) and their performance on the seven clusters comprising the "Woodcock Language Proficiency Battery-Revised" (WLPB-R) was investigated. All participants were between the ages of 15 and 19 years who had a class standing of sophomore or junior in a large urban, Florida high school. They had no history of language impairments and of having any exceptional student education services during their formal education. Using Spearman-rho, it was found that no significant correlation existed between participant's "WLPB-R" cluster scores and their usage of AAE features. Most participants performed within average limits on all "WLPB-R" clusters using grade level norms, except for the Basic Writing Skills cluster. These findings suggest that the "WLPB-R" could be used to potentially identify strengths and weaknesses in adolescents from culturally and linguistically diverse (CLD) backgrounds, in particular those who speak varying levels of nonstandard English dialects. The present results support the need for local norms. (Contains 4 tables and 1 footnote.)