Numerous instruments used by school districts to assess language dominance are not designed to determine either language dominance or proficiency. Nor do they yield sufficient data for appropriate program placement. One example of such an instrument is the Del Rio Language Screening Test (DRLST), designed to screen children of three to seven years of age who may require special education programs, and not bilingual education programs. It is recommended for use with students in the following language groups: (1) English-speaking Anglo-Americans; (2) predominantly English-speaking Mexican Americans; and (3) predominantly Spanish-speaking Mexican Americans. The test is not designed to test language dominance; it is designed to diagnose disorders in language performance. In conclusion, it is not recommended that school districts use this measure to identify students for placement in bilingual-bicultural programs. Rather, this test should be used in connection with bilingual special education programs. (Author/AM)