The Walsh and Carballo evaluation of the effectiveness of transitional bilingual education programs in five Massachusetts communities, has the following flaws: (1) the sample of school districts studied suffered from "self-selection bias"; (2) the sample does not include a single large, urban school district; (3) the student samples analyzed are much too small to allow for any conclusions; (4) there is no statistical analysis of the data nor control for pre-existing differences between groups; and (5) the wrong comparison is conducted. In elaborating on those flaws, the report first describes five models of how to instruct children who do not speak English. It then summarizes the requirements of a methodological sound study and maintains that the studies cited by Walsh and Carballo do not follow those rules. Finally, the above five flaws are discussed in detail. A bibliography is included. (PS)